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iMac Intel 27" Retina 5K Display Heat Sink Replacement

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  1. iMac Intel 27" Retina 5K Display Heat Sink Replacement, Display: 步骤 1 中的图像 1,1
    在这个步骤中使用的工具:
    iMac Intel 27" Cardboard Service Wedge
    $4.99
    购买
    • With the hinge free to move, the iMac will be unbalanced and hard to work on. Repairs can be completed with the iMac laying down, but are faster and easier with an iMac service wedge.

    • If you are using the iFixit cardboard service wedge, follow these assembly directions to put it together.

    This instruction page is not clear and is ambiguous if you have to do all the steps to just change the power supply please clarify another words do I have to remove the speaker and the hard drive to replace the power supply?

    crawfordjohn - 回复

    This is a display removal guide not the power supply guide!Here’s the guide you need to follow for that iMac 因特尔 27" EMC 2546 电源更换

    Dan -

    Didn’t need the cardboard wedge to remove the display. Waste of money. Lay your Mac on its back.

    James Clive - 回复

    Die verlinkte Karton-Reparaturhilfe ist für den 21"-iMac. Passt sie auch 1:1 für das 27"-Modell?

    Stefan - 回复

  2. iMac Intel 27" Retina 5K Display Heat Sink Replacement: 步骤 2 中的图像 1,3 iMac Intel 27" Retina 5K Display Heat Sink Replacement: 步骤 2 中的图像 2,3 iMac Intel 27" Retina 5K Display Heat Sink Replacement: 步骤 2 中的图像 3,3
    • Starting on the left of the display, near the power button, insert the iMac Opening Tool into the gap between the glass panel and the rear case.

    • The hub on the iMac Opening Tool will keep you from pushing the wheel in too far. If using a different tool, insert no more than 3/8" (9.5 mm) into the display. You risk severing antenna cables and causing serious damage.

    Would a heat gun make this step easier? Or damage the iMac?

    Clark Green - 回复

    A heat gun wouldn’t help you here as you still need to cut though the adhesive. You also risk damaging the display with the excessive heat.

    Dan -

    Removing the original adhesive is easier than removing newly applied adhesive (e.g., if you have to reopen iMac).  If you should happen to need to reopen the iMac, please use extreme caution and highly consider my suggestions below.

    When using the pizza cutter tool, do the first few steps in reverse starting with step 8.  Starting on the left side is better since this is where the adhesive is narrowest.  The right side has two antennas and the top right has one, see the pictures for step 18-21, they are the brass colored metal rectangles near the edges.  The adhesive on these pieces are wider and therefore have more holding power.  The thickness of the pizza cutter tool is enough to crack the glass.

    Walter Hayden - 回复

    Continuing from my previous comment.  To remove the adhesive on the right side you’ll need to create a very slight gap to give the pizza cutter some more room.  Do this by cutting the adhesive on the left side up and around to the camera.  Before attempting to cut the right side. Carefully slide the plastic cards (I purchased two sets) to ensure the adhesive on the left top and side is completely free.  Now slowly move towards the right side.  After every inch or two of removing new adhesive, slide the card over to create this slight gap.  Be careful to not move the card too close to where the adhesive has not been cut.  You want to create a very slight gap without creating too much pressure.  Use extra caution with approaching the areas where the antenna are since the adhesive is stronger here and will need some additional cutting.  Follow this approach all the way around the right side.  Be careful to not create too much pressure at any one time.  Good Luck!.

    Walter Hayden - 回复

    I can confirm with Walter - trying to remove freshly applied adhesive is WAAAAY harder! My pizza cutter didn’t work correctly (the circle became a rectangle!) and I ended up with a small crack on the left of my screen. Dang it!

    Benon Koebsch -

    I would highly, highly, highly recommend AGAINST doing this at home. I followed these instructions to a T, and still somehow managed to have the screen not be able to turn on after the hard drive replacement. Then, once you’ve opened your Mac yourself, Apple will refuse to fix anything on the computer, and even other third party, Apple-authorized repair facility will refuse to repair it for you, and you will have to locate a non-authorized Apple repair facility. There, I am having to pay ~$600 to fix things that got screwed up, even though I followed the instructions here to a T, step by step, and did everything slowly and methodically.

    Beware, if you’ve never done this before, that be locked out of ever being able to use an Apple repair facility, or Apple-authorized repair facility, if you mess things up here now.

    Luke Gibson - 回复

    I performed this on a Late 2015 iMac and there weren’t any significant differences to these steps, but I did find the repair to be nerve-wracking. My model cost nearly $3,000 and about 10 steps into this guide (which I did fully read ahead of time) I was thinking, “what have I got myself into?” But I didn’t rush and happily I’m typing this on my repaired iMac! I found a video from OWC that was more useful than the photos in this guide for certain steps: https://vimeo.com/139364064

    Anthony Zimmerman - 回复

    Don’t know if you are still around, but THANK YOU for posting this video! The video made it seem SO NOT SCARY and, in conjunction with the photos and comments and tips on this guide, was a lifesaver. Big thumbs up.

    Melissa Ortiz -

    First impressions so far: yes it can be a bit nerve wrecking if it is your first time doing this sort of thing and even with lots of experience with a 2011 model it’s still a bit unsettling haha (nervous laughter).

    What I recommend: use a guitar pick to start cutting the glue. You’ll need a bit of pressure so do just the tip.

    Once you’ve done the whole perimeter (minus bottom) do it again but now it should be easier to go deeper so go very slow and careful. Then get the old suction cups used to open older models and start lifting the display very carefully to see where it’s still glued and cut those as well.

    Then you should be done and now the real fun begins! :D

    Carlos Ferrari - 回复

    It’s ridiculous. Apple should pay for doing this. Like glue parts together to block a repair / make difficult. I smashed my iMac. FU Apple. Seriously, every product I owned had hardware issues. For example, bad solder joints. Never again Apple. I’m happy with Windows and in 2018 / 2019 there are many other manufacturers with high quality stuff. Apple is dying, if they do not change …

    Depple - 回复

    NOTE: I followed every step word for word, but the adhesive strips supplied are as bad as double sided tape. Within 48hours the screen had slipped off and cracked. Now I need to fork out for a new screen and try again.

    Not sure what to try next time with strips? Perhaps a bit of glue to help hold it??

    Dan Kelly - 回复

    Where do i get the “iMac Opening Tool?” its neither in the list of tools nor could i find it on the tool page.

    Patrick Cella - 回复

    Hi @snappadoodle! The opening tool is included in the adhesive kit included in the tool list, but you can purchase it separately here.

    Sam Goldheart -

    After disconnecting the power cord and before cutting the panel adhesive, push and hold the power button for 10 seconds. This will discharge the power supply capacitors. In case you accidentally touch the solder joints on the board, you won't be shocked and drop the panel.

    Paul Floro - 回复

    Bottom line: This repair seems to have worked (so far no more intermittent shut-downs). Thanks iFixit!

    As a novice who fully expected to destroy the display or worse, I make the following recommendations: (1) Before you start, read the steps several (many) times; visualize doing them and imagine how things could go wrong; (2) Read all the comments—there were some really helpful tips—like simply displacing the left speaker rather than fully removing it; (3) Get the recommended tools*; and (4) take your time—if you start to feel frustrated—seriously, stop and take a calming breath. Time is your friend. Failure is not an option.

    *I would add a 3-prong parts puller to the tool list—it’s great for pulling and starting loose screws so you don’t drop them down into the chassis like I did. It’s also great for retrieving the screws you’ve dropped into the chassis.

    Brad Bauknecht - 回复

    Hi brad, what exactly did you repair to stop the shutdowns? I’m having the same issue

    merinian -

    Merinian: I replaced the power supply and it’s still working fine at this late date. No more intermittent shut-downs. Fingers still crossed!

    Brad Bauknecht -

    Just completed the Core i5 to i7 CPU upgrade and can strongly recommend getting the “pizza tool” to cut the display adhesive. It worked flawlessly and was done in less than 5 minutes. No inadvertent cables cut. No display problems.

    John Fisk - 回复

    Thank you very much for the instructive tutorial. I just successfully replaced the hard drive on my 2012 iMac 27. I used a disposable surgical scalpel 15 blade, and locked the blade extending 9 mm from the scalpel shaft using office tape. I used regular double sided tape to reattach the screen. I cut the strips using the scalpel. I have no previous computer experience and this is the first time I replaced a computer part. This was easy and fun.

    Filip Dolatowski - Friday 11th Dec 2020

    Filip Dolatowski - 回复

    You are very lucky! I’ve had three systems come in which someone did the exact same thing! All three cut the display ribbon cables. Please don’t use surgical knifes or any other knife! Use the proper tool the special pizza cutter wheel designed for the task.

    .

    You likely spent more on the knifes than what the wheel cost with the correct tapes. You make the next time doubly hard to open not using the correct tapes! Hows the built in microphone? You may have messed it up.

    Dan -

    Thank you very much for the tutorial. You are the best!

    After reading all the post here I almost gave up doing this on my own. But I did it anyway and was succesful. I would recommend everyone to use the rollcutter. There is no risk of harming the screen if you use it. And in my case it was enough to open the imac. If you do not harm the screen connector or the screen the biggest part is done. It gets easier once you`ve stacked your screen somewhere safe. The parts inside are mostely not as delicate as the heavy and expensive screen!

    Take your time and work carefully. It is definitely doable!

    CONSULTINEL - 回复

    I found the cutter tool that came with my kit to work just fine. The wheel is extremely thin and I had no problem inserting the wheel to begin cutting. I follow the guide for the most part but took my time and use the cutting wheel slowly and then repeated the process a few times. Once I was able to pry the screen back about an inch I used the other end of the tool to cut additional adhesive that was still clinging to the body of the iMac and the screen. Having just replaced the power supply, and having my iMac running again, I do not think I will use the adhesive strips to reattach the screen. The screen fit back in place no problem which I did to test my Mac. Because the iMac screen sits at an angle I am quite comfortable that the screen is not gonna fall off. Also while having a screen off I was able to clean the inside of the Mac of dust buildup. I think I will only use the adhesive strips down the road if I’m gonna sell the Mac, which means I can give it a good clean before securing the screen.

    James Orwin - 回复

    If the screen falls off (which it will do!) it will damage the parts which would be a lot more expensive! PLEASE get the correct tapes and properly mount the screen back on.

    Think of it this way how many people have shot them selves with a gun not realizing it was loaded or set to go off!

    Dan -

    I think Dan is right as I decided it best to complete the process with the adhesive tapes to secure the screen. I just took some time to do a complete clean of the interior before sealing the display.

    James Orwin - 回复

    Ordered the full kit to replace my busted 3TB disc hard drive. All the tools work and are excellent. These pictorial and instructional install videos are complete, easy to use, and have good imagery. The 2TB SSD installed exactly as depicted. I used some 3M double sided automotive emblem tape to stick adapter to iMac case, no probs there. The adhesive strips also worked fine and stick firmly. Screen is solidly mounted, no falling out here. IFixit is awesome and this kit saved my over $1200 in getting another iMac. Highly recommended.

    Rick Pierce - 回复

  3. iMac Intel 27" Retina 5K Display Heat Sink Replacement: 步骤 3 中的图像 1,3 iMac Intel 27" Retina 5K Display Heat Sink Replacement: 步骤 3 中的图像 2,3 iMac Intel 27" Retina 5K Display Heat Sink Replacement: 步骤 3 中的图像 3,3
    • Use the tool like a pizza cutter—roll it along through the gap, and it will cut the foam adhesive through the center.

    • Be sure to always push with the handle behind the cutting wheel. If you pull, the wheel might get pulled out of the handle.

    • Run the tool up along the left side of the display.

    I found the 'pizza cutter' surprisingly smooth at cutting through four-year-old adhesive.

    Gerry - 回复

    In my experience the cutter also worked very well for cutting the original adhesive. Unfortunately when I was reinstalling the display with the new adhesive strips, somehow the display power connector came loose. I had to open the display a second time and the cutter was not as effective against the new adhesive. I managed to break the cutter tool plastic wheel and cause a few small cracks in the edge of the displays glass as I worked! Be careful and go slowly!

    azaadkb - 回复

    The cutting tool worked great until I accidentally twisted it a bit while rounding a corner. A chunk of the wheel snapped off, making the rest of the job quite a bit more challenging. Just make sure you are keeping the tool directly parallel with the screen.

    BARRY RODRIGUEZ - 回复

    I concur, opening the screen a 2nd time is considerably more difficult because the adhesive strips are thinner than the original, which makes getting the cutting tool inserted much more difficult….as a result unknowingly I elongated a small crack to a much longer crack and somehow, the LCD now has a wide grey strip from top to bottom….The first time opening was easy, second time resulted in a ruined screen.. The cost of. a replacement LCD is the same has replacing the entire computer….I would recommend anyone attempting to remove the screen for any reason, do not use the aftermarket adhesive strips if you ever intend to open it up; again, or cut the strips much shorter, or possibly use a few pieces of scotch tape or similar to hold the screen in place….since the screen tilts back, this should not be a problem…Good luck…

    S. Baxter - 回复

  4. iMac Intel 27" Retina 5K Display Heat Sink Replacement: 步骤 4 中的图像 1,3 iMac Intel 27" Retina 5K Display Heat Sink Replacement: 步骤 4 中的图像 2,3 iMac Intel 27" Retina 5K Display Heat Sink Replacement: 步骤 4 中的图像 3,3
    • Continue wheeling the tool up around the top left corner.

  5. iMac Intel 27" Retina 5K Display Heat Sink Replacement: 步骤 5 中的图像 1,2 iMac Intel 27" Retina 5K Display Heat Sink Replacement: 步骤 5 中的图像 2,2
    • Cut the adhesive along the top left of the display.

    The pizza cutter will sink in all the way to the tool handle when the adhesive is full cut, but don’t feel you have to do this in one motion. Some parts cut easier and some require a lot (like 20x) of gentle back and forth.

    Anthony Zimmerman - 回复

  6. iMac Intel 27" Retina 5K Display Heat Sink Replacement: 步骤 6 中的图像 1,2 iMac Intel 27" Retina 5K Display Heat Sink Replacement: 步骤 6 中的图像 2,2
    • Continue along the top of the display.

    • You may want to run the tool back and forth through what you've already cut a few times, to ensure you get as much of the adhesive separated as possible.

    what about the part where the camera is though? do I just treat it like the rest of the screen?

    Boris - 回复

    yes. the tool can’t go too deep

    flow in - 回复

    I measured a depth several positions.

    - About 6 centimeters near iSight Camera center, you must no use iMac opening tool, because iSight element exists.

    - iMac opening tool has a 9mm radius, so it may break iSight camera element.

    - Making a plastic card stacking 2 or 3 to 3mm, under the iMac opening tool, that makes inserting a gap 5~6mm like below.

    @. iMac opening tool

    ====== plastic card3 (credit card 1mm)

    ====== plastic card2 (1mm)

    ====== platic card1. (1mm)

    ———————————————— isight camera element (total 5~6cm) ————

    In my case, i got a display problem where lcd display yellow connector was torn without care.

    Be helpful.

    KWANGBOK, LEE - 回复

  7. iMac Intel 27" Retina 5K Display Heat Sink Replacement: 步骤 7 中的图像 1,3 iMac Intel 27" Retina 5K Display Heat Sink Replacement: 步骤 7 中的图像 2,3 iMac Intel 27" Retina 5K Display Heat Sink Replacement: 步骤 7 中的图像 3,3
    • Push the tool around the top right corner of the display.

  8. iMac Intel 27" Retina 5K Display Heat Sink Replacement: 步骤 8 中的图像 1,2 iMac Intel 27" Retina 5K Display Heat Sink Replacement: 步骤 8 中的图像 2,2
    • Wheel the tool down along the right side of the display.

  9. iMac Intel 27" Retina 5K Display Heat Sink Replacement: 步骤 9 中的图像 1,2 iMac Intel 27" Retina 5K Display Heat Sink Replacement: 步骤 9 中的图像 2,2
    • Finish pushing the opening tool to the bottom of the right side of the display.

    • At this point, you'll want to run the tool back around the entire display, to ensure you cut as much adhesive as possible.

    I didn’t have the fancy cutter or cards. So I used my actual pizza cutter. Followed directions just the same, and it easily cut through the adhesive w/o issues or marring the surfaces. Actually used it to rock back and forth to lift the screen. It’s all about taking your time. I rolled it back and further until cut thru. The 3/8 to 1/4 inch is right, but the screen framing actually prevents further depth unless you force it further. The adhesive actually protected the glass while cutting thru, so no damage. Great instructions, but where to get the replacement adhesive to reinstall?? Should be four independent strips.

    Keith Thomas - 回复

    You are very lucky you didn't cut to deep! The plastic cutter that's in the kit is the only thing I would use. Spending a few bucks on a tool is a lot cheaper than $500 for a new display!

    Please don't use a real pizza cutter!

    Dan -

  10. iMac Intel 27" Retina 5K Display Heat Sink Replacement: 步骤 10 中的图像 1,3 iMac Intel 27" Retina 5K Display Heat Sink Replacement: 步骤 10 中的图像 2,3 iMac Intel 27" Retina 5K Display Heat Sink Replacement: 步骤 10 中的图像 3,3
    在这个步骤中使用的工具:
    Plastic Cards
    $2.99
    购买
    • While the opening tool did the lion's share of the work, the display will still be slightly adhered to the case. A plastic card will be necessary to free up the last of this adhesive.

    • Set the iMac face-up on a table.

    • Starting from the top right corner of the iMac, insert a plastic card between the display and frame.

    • Be careful not to insert it more than 3/8" (9.5 mm), or you may damage internal components.

    I actually DESTROYED my display (black vertical strips) by pushing the card in a bit TOO DEEP. So it is REALLY important to insert the card only a bit (1-2mm) more than the cutter wheel, in particular at the top side, where many flat cables connect the panel with the PCB. These can be damaged very easily!

    Peter Fischer - 回复

    Same thing with me…. Pushed cards to far…. new panel needed…€600…..

    i think ifixit needs to place a bigger caveat, as I have missed it the first time

    Edgar Broekema - 回复

    i successfully upgraded two imacs. one opened with ifixit pizza knife and another with a regular paper knife. however, when i had to open the first one once again i broke its screen glass. it seems ifixit adhesive strips are too strong. next time i’ll try to use heater to weaken glue tension.

    Eugene Kharkov - 回复

    I broke one too. And even if you think you did it correctly, you’ll not be able to see where you might have gone too far. You would think it’s very protected behind that metal plate, but no. Take special care with this offence to “right to repair” This should have been designed WAY better. I mean replacing a hardrive that is very likely to fail over the course of time, or even a simple desire to upgrade to an ssd!.

    Bummer

    Denis Sytmen - 回复

    HINT: If you turn the card and use the blue part of it, then you can avoid going to deep: no further then the blue part …

    Barthold - 回复

    On the cards I got with my iFixit kit, the blue part was way bigger than 9.5mm — closer to 20mm!

    I made a line 9mm from the edge of each of my cards and used that as a guide.

    Damian Chadwick -

    I’m thinking I might just use vinyl tape to keep the screen in place for at least a little while after an upgrade. The extra strength of the replacement tape sounds scary.

    Art Hackett - 回复

    I wrapped two layers of vinyl electrical tape around the short side of an old gift card 3/8” from the edge. This “stop" prevented the card from going in too far. The card really helps to break the panel free.

    Paul Floro - 回复

    This is a good tip!

    Lennart Saaf -

    Great idea! Wish I had read this before doing it. My less then optimal solution was to draw lines 3/8” around the cards, not as safe as your fix, but fast.

    Michael Piplani -

    Umm.. I’m not sure that I’d recommend using a repurposed credit card to open the display - I found that using the “pizza tool” to cut the old adhesive then using a pair of suction cups to gently pull the display up worked perfectly well.

    John Fisk - 回复

    surely the card should have been designed such not to go further than certain distance with a barrier band.

    S Hussain - 回复

    The cards don’t have any means to control the depth, its your skills which control it. Its no different from how you use a knife to cut your chicken up when you serve it for dinner.

    Dan -

    The pizza roller tool is enough to cut through the adhesive. You dont need to cut in a lot further. So the cards are really not necessary.

    sebastian.wittl - 回复

    might be a stupid question but would credit cards or state ids work too?

    John Ta - 回复

    You need the pizza cutter! The cards are used to hold the display off of the case frame.

    As for as using old credit cards and useless ID cards sure they will work. I wouldn’t use anything important ;-}

    Dan -

    No problems. I used two old credit cards and marked out a line using permanent marker so it was at the same depth as stipulated on this page. I even pushed it in a little deeper and no issues.

    James Clive - 回复

  11. iMac Intel 27" Retina 5K Display Heat Sink Replacement: 步骤 11 中的图像 1,2 iMac Intel 27" Retina 5K Display Heat Sink Replacement: 步骤 11 中的图像 2,2
    • Gently twist the plastic card to open the space between the display and frame, and cut any remaining adhesive near the corner.

    • Using too much force will crack the glass. Work carefully, and don't try to create a gap any larger than about 1/4" (6 mm).

    My children tend to collect cards like this from hotels, Disneyland, old IDs, iTunes cards, gift cards etc. They came in handy for this step. After wedging in the first card into the left corner, I wedged the left corner, then added cards along the bottom edge. Finally I continued to push in additional cards to existing cards and found that this created a smooth even pressure along the display top. At 2-3 card-thickness the last of the adhesive let go, gentle as a baby.

    Anthony Zimmerman - 回复

  12. iMac Intel 27" Retina 5K Display Heat Sink Replacement: 步骤 12 中的图像 1,3 iMac Intel 27" Retina 5K Display Heat Sink Replacement: 步骤 12 中的图像 2,3 iMac Intel 27" Retina 5K Display Heat Sink Replacement: 步骤 12 中的图像 3,3
    • Be sure to stop cutting before the iSight camera in this step, or you may damage it.

    • Slide the card toward the center of the display, to cut any remaining adhesive.

    was denn jetzt? Vor der Kamera aufhören, oder in Richtung Bildschirmmitte schieben, um DEN REST zu entfernen? Wenn ich vor der Kamera aufhöre, kann ich nicht alles an Kleber entfernen.

    Julia S. - 回复

  13. iMac Intel 27" Retina 5K Display Heat Sink Replacement: 步骤 13 中的图像 1,2 iMac Intel 27" Retina 5K Display Heat Sink Replacement: 步骤 13 中的图像 2,2
    • Put the card into the corner again and let it stay there to keep the adhesive from resettling.

  14. iMac Intel 27" Retina 5K Display Heat Sink Replacement: 步骤 14 中的图像 1,3 iMac Intel 27" Retina 5K Display Heat Sink Replacement: 步骤 14 中的图像 2,3 iMac Intel 27" Retina 5K Display Heat Sink Replacement: 步骤 14 中的图像 3,3
    • Insert a second card into the gap between the display and frame in the top left corner.

  15. iMac Intel 27" Retina 5K Display Heat Sink Replacement: 步骤 15 中的图像 1,2 iMac Intel 27" Retina 5K Display Heat Sink Replacement: 步骤 15 中的图像 2,2
    • Gently twist the card, slightly increasing the space between the display and frame.

    • As with the other side, move slowly to allow the adhesive to break, and be careful not to over-stress the display glass.

  16. iMac Intel 27" Retina 5K Display Heat Sink Replacement: 步骤 16 中的图像 1,3 iMac Intel 27" Retina 5K Display Heat Sink Replacement: 步骤 16 中的图像 2,3 iMac Intel 27" Retina 5K Display Heat Sink Replacement: 步骤 16 中的图像 3,3
    • Slide the plastic card toward the center, again stopping just before the iSight camera.

  17. iMac Intel 27" Retina 5K Display Heat Sink Replacement: 步骤 17 中的图像 1,2 iMac Intel 27" Retina 5K Display Heat Sink Replacement: 步骤 17 中的图像 2,2
    • Insert the card back into the top left corner.

  18. iMac Intel 27" Retina 5K Display Heat Sink Replacement: 步骤 18 中的图像 1,3 iMac Intel 27" Retina 5K Display Heat Sink Replacement: 步骤 18 中的图像 2,3 iMac Intel 27" Retina 5K Display Heat Sink Replacement: 步骤 18 中的图像 3,3
    • Only lift the display a few inches—it is still attached to the iMac by data and power cables.

    • With the cards inserted as shown near the corners, gently twist the cards to increase the gap between display and case.

    • If there are any sections that seem to stick and won't separate, stop twisting and use one of the cards to cut the adhesive in the problem area.

    • Begin to lift the top of the display up from the frame.

    I would recommend using suction cups at this stage to lift the display.

    Marco De Palma - 回复

    I would strongly recommend using suction cups

    Luca Mucci - 回复

    Agreed about the suction cups. An extra pair of hands might be good here as well.

    Damian Chadwick - 回复

    I agree, I’m using iFixit suction cups right now.

    tanner85 - 回复

    Go very slowly when lifting the display – give time for the adhesive at the bottom edge to stretch and flow. If you lift too fast, the glass can crack. That’s what happened for me.

    Gerry - 回复

    The stickiest location on my iMac was the mid-to-lower section of the right side. There are a couple of thicker areas that needed attention from the plastic cards.

    Lennart Saaf - 回复

    This is the step where I cracked the screen.

    HABEEB102 - 回复

    Did you use the pizza cutter tool first?

    Dan -

    WARNING!!! This is where you can crack you screen. TAKE YOUR TIME! Everything work fine for me because I took my time. I was very shocked at how fragile the screen is. It does have a small amount of flex but don’t push your luck. There were two things that made this easy for me #1 Once you have used the cutting wheel to your best judgement to cut the adhesive, start using the iFixIt plastic cards as spacers and space them evenly around the screen. I used 10 individual cards of and gently moved them up and down at each section two at a time. Once I started having less resistance, I combined 2(i.e. 5 sets total) cards evenly space to allow for move rigid and stronger movement to separate the screen. This really helped me to free up more adhesive. #2 before lifting the screen up fully, use tweezers to pull the adhesive like a string from around the entire monitor. This will make lifting the screen much easier since all adhesive will be removed. Finally when lifting the screen use the cards with your hands under them.

    Andrew Phillips - 回复

    Would any of you consider the possibility of heating the glass with a hot-air fan before starting the process? In that way, the adhesive would let the screen go easier, I think.

    ManuG - 回复

    The type of tape has a lot to do with it. If the original tapes are still present then the pizza tool slices through the thin foam core of the tape so heating is not needed. If on the other hand someone replaced the tapes with just regular double sided tapes then there is no foam core to split and there is a sizable risk the display will get damaged in the process of taking it off. So sure in this case a bit of heat might help, just be aware the LCD panel area is quite close to the edge along the top three sides so you also have the risk of dating it from over heating!

    Dan -

    If not for iFixit tuts and tools, no way I could do this. iMac 27" takes the prize as the worst design ever for upgrades/maintenance, what were they smoking when they designed it like this?

    Jim Gavioli - 回复

    I have always believed that a properly placed screw can be a beautiful thing. A few decorative, but functional, screws placed in the back of the iMac case to attach the screen would be awesome, but this method is anything but beautiful and borders on insane.

    Leland Goertz - 回复

  19. iMac Intel 27" Retina 5K Display Heat Sink Replacement: 步骤 19 中的图像 1,2 iMac Intel 27" Retina 5K Display Heat Sink Replacement: 步骤 19 中的图像 2,2
    • While holding the display up with one hand, use the other to unplug the display power cable.

    • Lift the display up enough to have easy access to the connections, but not so much that you stretch the cables and stress their connections (about 8").

    Mark all cable connectors with a spot of white correction fluid before removal. This will remove the risk, when reinserting them later, of getting them the wrong way round. Yes - I know they will only plug in one way round, but it does make life easier if you are not in perfect lighting!

    Alastair Lack - 回复

    At this step, if you mess up anything with these 2 cables, especially when plugging them back in, even if you think you’re following the instructions here to a T, then you’re screwed.

    I would highly, highly, highly recommend AGAINST doing this at home. I followed these instructions to a T, and still somehow managed to have the screen not be able to turn on after the hard drive replacement. Then, once you’ve opened your Mac yourself, Apple will refuse to fix anything on the computer, and even other third party, Apple-authorized repair facility will refuse to repair it for you, and you will have to locate a non-authorized Apple repair facility. There, I am having to pay ~$600 to fix things that got screwed up, even though I followed the instructions here to a T, step by step, and did everything slowly and methodically.

    Beware, if you’ve never done this before, that be locked out of ever being able to use an Apple repair facility, or Apple-authorized repair facility, if you mess things up here now.

    Luke Gibson - 回复

    Quote - "Beware, if you’ve never done this before, that be locked out of ever being able to use an Apple repair facility, or Apple-authorized repair facility" You cannot be serious can you? So because someone attempted to repair their own Apple device that they OWN, you are saying that they may/will be locked out of using any Apple repair service again? Ridiculous claim sorry.

    Peter Newman -

    The display cable, the wider one, has a lock on it , usually a plastic tape lift tab to release it, once thats flipped it should come out fairly easily, if your experiencing resistance and the cable isn’t coming out then check for this lock/latch, the power cable just pulls out, just don’t rush it everything should go fine, fairly easy to do with the end result a working iMac

    Ed tabickman - 回复

    Is it possible to replace the power cable if its damaged? I can’t seem to find anything about this.

    Joseph Orr - 回复

    After finishing my hard drive replacement I reconnected these connectors to test my display before using new adhesive. Everything was working beautifully. But then when I applied the new adhesive and went to seal the display on for good - the display power cable somehow became disconnected! I had to reopen the Mac for a second time which was far more difficult with new adhesive. When reinstalling double and triple check that the cables are securely inserted before the final seal. Sounds obvious but it’s quite the annoyance if something goes wrong at this point.

    azaadkb - 回复

    Very difficult to work with these connectors.

    Power cable very difficult to unplug - data cable veeeeery difficult to plug in.

    I noticed that working with the iMac positioned vertically (and with a proper support for inclination) makes this step slightly easier…

    Luca Mucci - 回复

    Interesting comments.. personally, I didn’t find the cables particularly difficult to detach and reattach. You do have to be patient and gentle. Personally, I found that a rolled up beach towel gently wedged between the unit and back of the display helped keep the glass up. Also, a small flashlight can be helpful to see the cables and connectors if you’re lighting isn’t perfect.

    John Fisk - 回复

    I’d agree to John - not overly difficult. My workaround was to prep the screen for re-installation and then place it in front of the standing machine. The cables are long and flexible enough to be put in place even in this state. You can easily attach the cables and continue with fixing the screen to the housing.

    stefan - 回复

    I would not recommend doing this step as pictured. The cable you are removing has little tabs on the wide side that can be depressed inwards towards the center of the connector, releasing the cable. If you just grab the cable as pictured and yank it out, without depressing the side tabs, you are likely to damage something. Don’t pull on the wires, use your fingernails at the connector to squeeze the very small little tabs inward to release the cable from the connector.

    maccentric - 回复

    The removal of the LCD power cable does require the left and right sides to be squeezed inwards towards each other first before removing, why this isn’t mentioned in the take apart can lead to damaging the iMac.

    robert - 回复

    I agree with maccentric. DO NOT just pull the power cable. Use your fingernail or spudger and gently press the tiny notch inward and towards you gently and one side will disengage. Do the same for the other side and it will slide right out. The notches just have enough edge to catch your nail or spudger. Using your nail is better as you can better feel when you have caught the edge and can feel the cable move.

    Andrew Phillips - 回复

    I lifted the display a few inches up and propped it open in the middle using my iPhone in portrait mode with its torch on. Did the job nicely:

    James Clive - 回复

  20. iMac Intel 27" Retina 5K Display Heat Sink Replacement: 步骤 20 中的图像 1,3 iMac Intel 27" Retina 5K Display Heat Sink Replacement: 步骤 20 中的图像 2,3 iMac Intel 27" Retina 5K Display Heat Sink Replacement: 步骤 20 中的图像 3,3
    • Flip up the metal retaining bracket on the display data cable.

    • Disconnect the display data cable.

    • This is a delicate connection that can easily be broken. Be sure to pull the display data cable connector straight out of its socket, toward the top of the iMac.

    I replaced HDD to SSD and assembled parts again. When I boot up the iMac, I found black lines on display (looks partly not broken).

    I searched Internet, and some says graphic card problem, but I didn't touch anything but cable to lift up.

    Could the damaged display data cable cause this situation? I hope I could fix this by just replacing the cables..

    chansung park - 回复

    Sorry, Black lines is a damaged display assembly ;-{ In the process of removing it you either pushed the tool into deep or you torqued the glass severing the tiny wire traces.

    Dan -

    Same trouble here, is it cable trouble or connector trouble?

    redfoxydarrest - 回复

    Sorry damaged display

    Dan -

    I think whenever words like "...is a delicate connection that can be broken. Be sure to pull the [cable in a certain direction] ANYTIME.... It is worth either a closeup or 2, maybe one with annotations or insertion directions and maybe a motion direction arrow with the something like and 'X' char or a circle division slash over the wrong one.

    john - 回复

    I agree! +1

    Jim Reitz -

    Yes, John is absolutely correct on this one. I damaged the display cable trying to get it back in. A close up would have helped and now my computer might have actually been fixed.

    Marsha Giardina -

    [|There are 2 cables to disconnect on my Mac (?). Also, I don’t see a metal retaining bracket. I can take a picture, but cannot attach. I got the glass loose with no problem, but am worried about damaging the cables]

    Jim Kelly - 回复

    Hi Jim! You can go to our Answers Forum to post some better images of your situation!

    Sam Goldheart -

    At this step, if you mess up anything with these 2 cables, especially when plugging them back in, even if you think you’re following the instructions here to a T, then you’re screwed.

    I would highly, highly, highly recommend AGAINST doing this at home. I followed these instructions to a T, and still somehow managed to have the screen not be able to turn on after the hard drive replacement. Then, once you’ve opened your Mac yourself, Apple will refuse to fix anything on the computer, and even other third party, Apple-authorized repair facility will refuse to repair it for you, and you will have to locate a non-authorized Apple repair facility. There, I am having to pay ~$600 to fix things that got screwed up, even though I followed the instructions here to a T, step by step, and did everything slowly and methodically.

    Beware, if you’ve never done this before, that be locked out of ever being able to use an Apple repair facility, or Apple-authorized repair facility, if you mess things up here now.

    Luke Gibson - 回复

    Can anybody upload an image of how the display can get damaged from removing it? I find it hard to believe (though I’m reading the horror stories here) that a whole display can get damaged. Especially when many of us were following to a T and being VERY CAREFUL.

    Thanks.

    Bryan - 回复

    First: During reassembly, I highly recommend you connect these cables and do a test boot BEFORE you remove the protective tape on the adhesive strips. That way you can fix any issues(like a damaged cable) if something is not right and you have not re-glued the screen back down which will cause a problem. If you have a second person and everything is working after test boot, you can just leave the cables connected, lift the bottom of the screen and have 2nd person pull the protective tape on the adhesive strips and you can set the screen in place. Second I damaged the video data cable during reassembly on my late 2015 iMac- I did not get the connector straight and I damaged the wires on the cable. I recommend you have someone else hold the screen while you attach the cables - they are fragile. Luckily, the data cable was easily replaced for only about $20. If you must do this by yourself, just be careful I highly recommend have 2 people at this step during reassembly.

    Chip T - 回复

    At least on my “late 2013” model, the smaller display cable connector has tiny, tiny clips on the outside edges. These must be squeezed to unlatch it. Don't pull on the cable itself or the wires can be pulled out. Even with my small fingers, it was hard to grip the clips. When reconnecting, the connector will lightly snap into place.

    Paul Floro - 回复

    I managed this step without any problems, but I had my wife hold the screen up while I disconnected/connected the cables. I STRONGLY encourage another pair of hands here so you can focus your full attention on being ultra careful with the cables.

    BARRY RODRIGUEZ - 回复

    On the 2015 there are 2 cables.

    1. Once the display is loose use the Mac foam block sold from Ifixit to keep the display from rocking to hold open the glass

    2. Blow out dust with canned air

    3. Get a flash light and small flat edged screw driver

    4. Use the screw driver to slow pry loose the connector from the socket by gently inserting it in the gap on the left and then on the right slowly easing the connector from the socket towards the top of the glass

    5. The more center connector has a pull tape and a wire loop. Lift pull tape and the wire loop will raise up.

    6. Pull the wire loop towards the top of the glass to slide out the connector from its socket

    Anthony Crocker - 回复

    Good instructions except for the screwdriver - try and use a plastic spudger instead ! Also, getting a headworn LED light makes life a bit easier.

    Philip Sedlmair -

    Have a late 2013 model and went to do the SSD upgrade. When going to remove the display we cracked the bottom left corner of the glass (just the glass frame part - not part of the screen that displays anything). We were also having difficulty putting re-attaching the display flex cable. Whenever we finally went to test it before re-sealing the screen back on with new adhesive it would sound like it is turning on as it makes boot-up noises and the fans start running, but the screen would just remain black. Just wondering if the crack in the bottom left-hand side of the glass/display would have damaged a part of the display assembly or if it would be more likely that we just damaged the display flex cable (which can be replaced for $26)?

    Zach Tweel - 回复

    Did you get to the bottom.of this?

    paul.lynch1 -

    does anybody know how the Display Cabel pin assignment is? I want to try if I can attach the Panel to another grafic card

    Marco Rizzo-Scheible - 回复

    I’ve completed the upgrade to SSD, but while restarting my screen remains black. As if no connected.

    I assume I broke the sensitive connector.

    —> how to order a spare?

    Durain - 回复

    Did you get to the bottom of this?.

    paul.lynch1 -

    is the display assembly of 2015’s the same as 2017’s?

    zenu - 回复

    No! Apple loves to mess us up!

    Dan -

    The panels are different since technology progresses at a rapid pace and Apple does like to be on bleeding edge of things. When they do a manufacturing run of screens, there will be a few years that will have the same screen. I believe 2017 is when they introduced the higher resolution panels. Everything from 2012 late to 2015 should be the same though.

    Philip Sedlmair -

    That display cable connector is common to many Macs of the 2012 era. I’ve destroyed 2 in 38 years of servicing all types of computer equipment.

    As stated, there is a latch on this connector. If you put any incorrect force on the cable or connector during disassembly or reassembly, you will break the cable and possibly the connector. The cables can be purchased online and the video connector on the display is exactly the same.

    I repeat, if you pull out on the video cable after it has been unlatched instead of parallel to the logic board, YOU WILL BREAK IT.

    James Hendrickson - 回复

  21. iMac Intel 27" Retina 5K Display Heat Sink Replacement: 步骤 21 中的图像 1,2 iMac Intel 27" Retina 5K Display Heat Sink Replacement: 步骤 21 中的图像 2,2
    • Lift the display up to a near-vertical position.

    • At this point there is still a strip of adhesive along the bottom of the display, that will hold the display to the frame like a hinge. You can loosen this adhesive by working the display up and down a few times.

    • Remove as much of the adhesive as possible by grabbing it at the outer edges, and then pulling or rolling it towards the middle.

    Thank you Stef, that's what i will do next time, i cracked the lower part of the screen went opening very slowly, that's probably why those "tabs are for !!

    dforgues - 回复

    Thanks Stef, this has saved me! Simple yet very effective.

    David Zemsky - 回复

    Yep, I cracked the lower corner of the display as well. I failed to work the adhesive enough to loosen it sufficiently. Be careful, I just had to buy my customer another screen!

    Peter Haigh - 回复

    There seems to be missing a step or two. As I was removing the old display, there are two wires that need to get transferred to the new replacement display. There is not note about these two wires located at the top of the display. The 1.128-inch ribbon cable and then this other 4-inch long, two-wire cable that goes to a very small circuit board that is 1/4 by 3/8 of an inch and seems to be adhered to the panel.I have not been able to get this cable off the old display. There is a port for it on the replacement display.

    Note: When ordering this screen, and plastic cards as noted tools, ifixit.com did not list the pizza cutter or the new replacement adhesive strips. So now I’m not sure how to get the new one on and secure.

    Todd Derek - 回复

    Are you sure your trying to remove a late 2013 model A1419 display assembly?

    robert -

    The adhesive strip along the bottom is designed with a pull tab on each outer end. Rather than lever and pull the screen simply carefully pull the tab which removes that half of the lower adhesive strip and frees up the screen.

    Andrew Stephens - 回复

    Niemals den unteren Klebestreifen mit einem scharfen Gegenstand wie Rasierklinge oder so versuchen zu trennen, davon geht die Beschichtung des Displays kaputt und man hat hässliche Streifen unten hinter dem Glas. Stattdessen lieber versuchen, das Display nach oben zu klappen und abzuziehen.

    Bas ti - 回复

    translation from Bas Ti because this is very important:

    Never try to separate the bottom adhesive strip with a sharp object such as a razor blade or something, the coating on the display will break and you will have ugly strips at the bottom behind the glass. Instead, try to flip up and pull off the display.

    Kurt Grootjans - 回复

    If you are just replacing the hard drive, I have found that it is quite possible to do while leaving the screen connected, making the process much easier. The amount you need to tilt the screen to access the little pull tabs at the bottom to release the screen is also sufficient to access the drive. I remove the drive while the iMac is upright. I also heat up the bottom of the screen to soften the glue and to help with the possibility of the glass cracking while doing this step.

    maccentric - 回复

    Very dangerous! You’ll stress the cables and the logic board connectors.

    Dan -

    I meant that you can leave the bottom strip of adhesive attached; you still need to disconnect the 2 cables.

    maccentric -

    As mentioned before you can pull out the lower adhesive strip. Dont cut it or move the display up and down. This is even more dangerous. On the lower side of mac where the display glass ends is a offset. When moving the display up and down you might crack it over that offset.

    sebastian.wittl - 回复

    When removing the adhesive from the top of the screen, be sure to start at the iSight camera location (= in the middle). If you start at an upper egde of the glass (side doesn’t matter) towards the middle, you risk removing the black background foil from the screen, which will result in ugly stripes behind the glass.

    christopher.winter - 回复

  22. iMac Intel 27" Retina 5K Display Heat Sink Replacement: 步骤 22 中的图像 1,3 iMac Intel 27" Retina 5K Display Heat Sink Replacement: 步骤 22 中的图像 2,3 iMac Intel 27" Retina 5K Display Heat Sink Replacement: 步骤 22 中的图像 3,3
    • Be very careful not to touch the capacitor leads or any exposed solder joints on the back of the power supply (boxed in red).

    • If necessary, a plastic card can be used to cut any remaining sections of the bottom adhesive strip.

    Would have been helpful to box the same red area when using the plastic card to separate the glue. Since the red blocked picture is inverted, if someone doesn't pay close attention it may not be obvious that the area of concern is at the right top of the graphic pictures in which the plastic card use is being demonstrated..

    Wizbang FL - 回复

    you don't need to cut the bottom part as the bottom tape is stuck on each side and you can easily pull it out

    Thomas Webb - 回复

    What is the twisted wire taped to the back of the display that can bee seen in the upper right of the first two pictures? I have an 27” iMac without a screen an my replacement does not have this wire. I think it is a temperature sensor but do not know where it connects to.

    Eric - 回复

    [|I opened up my iMac and there’s no HDD or SSD in that spot. its just empty.]

    John Warmann - 回复

    You probably had just an SSD installed and no HD, which is on the opposite side of the motherboard (and quite a bit more work to access).

    maccentric -

    Please update the picture to include the RED BOXED IN AREA that you refer to on all three pictures in this step. I have had a few zaps from these supplies and it is not pleasant.

    Charlie Nancarrow - 回复

    J’ai réussi à intervenir dans l’iMac sans décoller l’ensemble de l’écran. Je l’ai ouvert en laissant la dernière partie collée (vers le logo Apple) et qui sert comme une charnière. Bien calé et assuré l’écran n’a pas bougé et j’ai pu changer mon disque dur facilement. Le grand avantage et d’avoir l’écran toute suite juste quand on le recolle par la suite.

    David Mariaux - 回复

    Well, I of course touched a soldering point in the red area as my hand slipped. I heard and felt a tiny “click” and after replacing the HDD with SSD etc I can not power the iMac up anymore. Not a sign of life :-( I suppose I broke the power supply. Can someone confirm? Or could something else have broken too?

    David Rosner - 回复

    I took my time and pulled both tabs slowly gently. Easily removed and glass came right off.

    Keith Thomas - 回复

  23. iMac Intel 27" Retina 5K Display Heat Sink Replacement: 步骤 23 中的图像 1,3 iMac Intel 27" Retina 5K Display Heat Sink Replacement: 步骤 23 中的图像 2,3 iMac Intel 27" Retina 5K Display Heat Sink Replacement: 步骤 23 中的图像 3,3
    • Be very careful handling the display—it's big, heavy, and made of glass. The display has fragile edges. Avoid lifting the display by the corners.

    • Lift the display up from the frame and remove it from the iMac. Lay the display face down on a flat, soft surface.

    • It may be necessary to slowly lift from one side, to peel against the remaining adhesive.

    • After the adhesive is cut, it cannot be used to re-seal the display in place. Follow this guide when your repair is complete to replace the adhesive strips that secure the display to the rear enclosure.

    You really should be using film handling or surgical type gloves to handle the screen to minimise finger grease on any of it. Even if it’s possible to clean most of it off, it can be corrosive over time.

    Art Hackett - 回复

    Use a large suction cup and latex gloves for this:

    https://www.amazon.com/FCHO-Suction-Alum...

    Philip Sedlmair - 回复

    I think iFixIt should have mentioned this step might be safer using a suction cup as mentioned by Philip.⏎
    I thought following the guide, holding the screen on each side would be fine, but the glass cracked almost immediately.

    I did not grab it by the corners, just the middle of the glass.

    This glass is horrendously fragile. I don't think I can afford to repair the screen :(

    Rod Landaeta - 回复

    Lowering the screen down at the end here does not need a suction cup. It sounds like you left something in the channel so you fractured the screen from the object (a loose screw?). I've done a ton of these systems and have not needed a suction cup at this step. I do agree a suction cup can be helpful in the screen removal process. just to give you a better purchase, not pulling! As you can damage the screen if you pull too hard.

    Dan -

  24. iMac Intel 27" Retina 5K Display Heat Sink Replacement: 步骤 24 中的图像 1,1
    • If you are replacing the display panel, you may need to transfer additional components from the old panel to the new one. Compare the back of the old display with the replacement display. Note all cables, sensors, and foam cushioning that are missing from the new display.

    • If there is a wire or cable underneath adhesive tape, always pull the tape off first.

    • If the cable is glued to the chassis, use a heated iOpener or a hair dryer to soften the adhesive first. You can then slide an opening pick underneath the cable to loosen it. Never pull directly on the delicate connectors.

    • Slide an opening pick underneath the foam cushion pieces to separate them from the display, and gently pull them off. You may need some double sided tape to re-attach them to the new display.

    Be extremely careful removing the LCD Temp Sensor from the rear of the screen. If you pull the wire, you run the risk of severing the metal wire from the connector but not notice it because the surrounding plastic insulation may still be intact. Use a razor blade so “shave off” the sensor under the adhesive. I just had the screen replaced by a local shop and, upon boot, the fan was running full-speed and the Mac’s speed was miserable; Excel took 30 bounces in the Dock to launch rather than the expected 4-5. Novabench showed the Mac running at 4% of its expected speed (overall). The tech examined the sensor carefully, found the broken connection, soldered it back into place, and all was fine. Note that the (partially disconnected) sensor actually showed up when I ran Macs Fan Control in an attempt to work-around this. No problem controlling the fan speed then but the iMac’s running speed was awful until the disconnected sensor wire was fixed.

    barryjaylevine - 回复

    Hi barryjaylevine,

    I’ve had my LCD replaced on my iMac 27 / 2013 and there is no LCD Temp Sensor cable on the replacement screen.

    I’m experiencing the same performance issues.

    I’ve ordered a new sensor, do you have any pointers as to how to install it?

    Thanks,

    Simon

    UK

    simon kennedy -

    hey Simon, I used 2-sided tape….this is assuming the new sensor doesn’t already come with an adhesive surface already applied.

    a roll of kapton tape for your own peace of mind will make sure nothing detaches from thermally-induced adhesive crystallization

    make sure you position it in such a way that you can easily plug the lead back into the mobo….not a lot of length to that wire

    placebomessiah - 回复

    Howdy folks,

    Thanks for all the tips, LCD sensor fitted and iMac back in action.

    Never again!

    Simon

    simon kennedy - 回复

    Hello all. So I’m trying to pinpoint my backlight issue on my 2015 retina 5k - I noticed I’m missing my thermal sensor on the LCD. Would this help with the backlight? I’m sure it will keep my fans from going crazy. Any help would be appreciated! Note: I have LEDs except the 4th one. Thanks!

    Jordan Shababy - 回复

    Be careful when removing the adhesive residue!

    I didn’t know it, but I ended up leaving slight scratch marks that can be seen from the front side.

    Eric - 回复

  25. iMac Intel 27" Retina 5K Display Heat Sink Replacement, Remove the support bracket: 步骤 25 中的图像 1,2 iMac Intel 27" Retina 5K Display Heat Sink Replacement, Remove the support bracket: 步骤 25 中的图像 2,2
    • Use a Phillips screwdriver to remove the nine 3.2 mm screws securing the support bracket.

    • You may need to peel up the display adhesive lining the bottom edge of the iMac enclosure to access the screws.

    These are new steps from when I did this on my late 2015 retina iMac so I believe step 25 and 26 are optional (you can cope without doing it).

    Amuseme - 回复

    I did not find it necessary to remove these screws and this bar

    James Orwin - 回复

    I lost these 8 during the reassemble. The manual tells I need eight 3.2mm screws.

    Can anyone help to clarify what screws I need. I don't really understand this size. Is this M2x3mm?

    Daniel - 回复

  26. iMac Intel 27" Retina 5K Display Heat Sink Replacement: 步骤 26 中的图像 1,1
    • Remove the lower support bracket (a.k.a. "chin strap") from the iMac enclosure.

    No comments on this ?

    It's quite possibly the most difficult part to put back in the entire process

    The screws are tiny and the there is no easy way to line up the holes on the bracket with the screws

    Having got this far - it wasn't even all that necessary to remove this part in the first place

    Severe pain in the neck

    Eoin - 回复

    After an hour of painstaking mess - I managed to get 7 out of the 9 back in

    By that time I could care less about the remaining 2

    Eoin - 回复

    With the right tools and technique, the bracket can easily be replaced in under a couple of minutes.

    Use a screwdriver with a magnetized tip which frees up one hand and place a screw on the tip first.

    Then line up the screw hole on just one end of the bracket and using a pair of tweezers from the side, hold the bracket in place while you put in the screw.

    Next, do the same on the other end of the bracket. After that, all of the screws in the middle are quick to replace. I didn't really have to touch the bracket again after the end screws were in place.

    Hope that helps someone else since removing this bracket does make later steps a bit easier.

    Max Z - 回复

    I used Max Z tweezers technique but screwed one screw in at the end and then worked my way to the other end.

    Stephen B - 回复

  27. iMac Intel 27" Retina 5K Display Heat Sink Replacement, Remove the left speaker: 步骤 27 中的图像 1,1
    • Remove two 10 mm T10 screws.

    I found i didn’t need to remove the speaker nor the hard drive. In fact I managed to remove the old PSU without even removing the chin strap. However, to install the replacement PSU, I had to remove the chin strap. So I would say, remove the chin strap, but you can optionally leave the speaker and hard drive in.

    Cool_Breeze - 回复

    While you do not need to fully remove the screws as once you loosen them a few turns the speaker becomes free. I found that after the removal of the speaker, I turned it over and popped the screws out as this made it easier to replace it later as I could see the alignment before putting the screws back in. If not you may be off a little and you do not want to force the screw back in.

    James Orwin - 回复

    I used a pill container that I got from Walgreens to hold all of the fasteners I removed during the disassembly process. The container has 14 compartments (individual compartments for each morning and evening of the week). I put a small piece of paper in the compartment with the fasteners to note the name and step of the procedure and the size of the tool I used. Hopefully this will be useful when I go to put it back together again.

    Dan Smith - 回复

  28. iMac Intel 27" Retina 5K Display Heat Sink Replacement: 步骤 28 中的图像 1,3 iMac Intel 27" Retina 5K Display Heat Sink Replacement: 步骤 28 中的图像 2,3 iMac Intel 27" Retina 5K Display Heat Sink Replacement: 步骤 28 中的图像 3,3
    • Unplug the left speaker cable by pulling it straight up out of its socket on the logic board.

    • De-route the cable from the gap between the hard drive and logic board.

    • If the gap between the hard drive and logic board is too narrow for the speaker cable, disconnect it and leave the cable in place.

    I didn’t unplug and de-route this cable. Later, Step 29, has you remove the left speaker. This isn’t necessary. If you can just move the speaker over to expose the hard drive mounting screws, so if you’re not going to remove the speaker, you don’t need to unplug it.

    Anthony Zimmerman - 回复

    on the 2019 iMac, it is horizontal not vertical so pull it horizontally out.

    tarex7 - 回复

  29. iMac Intel 27" Retina 5K Display Heat Sink Replacement: 步骤 29 中的图像 1,3 iMac Intel 27" Retina 5K Display Heat Sink Replacement: 步骤 29 中的图像 2,3 iMac Intel 27" Retina 5K Display Heat Sink Replacement: 步骤 29 中的图像 3,3
    • Be careful not to touch any solder joints on the back of the power supply. Capacitors may be charged enough to give you a dangerous shock.

    • Use a spudger to disconnect the power button connector from its socket on the logic board.

    Can someone explain what are the solder joint? Or tell me what it looks it?

    brianyu - 回复

    The silver spots on the circuit boards. You may not want to tackle this alone. If you touch these areas, you can possible get a shock -- harming you and your computer.

    Robert -

    there is no need to disconnect the speaker, just unscrew it and move aside slightly to reach the HDD screws (about 5mm) - if you want to replace just the main HDD

    Thomas Webb - 回复

    Take note of exactly what direction this tiny little wire was.

    Joseph Ashe - 回复

    The connector has a plain black side and the other side you can see the 2 silver connectors.. the side you can see the 2 silver connectors faces the front.. the plain side is to the back/against the logic board.

    paul.lynch1 -

    If I leave my iMac unplugged for an extended period, say 24 or 48 hours, is it still possible to get an electric shock from the PSU? Do the capacitors eventually discharge?

    Dominic Pettifer - 回复

    you can do this method, or just wear latex gloves.

    Philip Sedlmair -

    make sure you’ve actually unplugged the mac when running this cable, and not had it plugged in to test the diagnostic LEDs, because one of those wee silver spots is carrying 230v, and its 6mm away from the place the cable runs, So if you have fat fingers like mine, that’s a free wake up zap

    flow in - 回复

  30. iMac Intel 27" Retina 5K Display Heat Sink Replacement: 步骤 30 中的图像 1,2 iMac Intel 27" Retina 5K Display Heat Sink Replacement: 步骤 30 中的图像 2,2
    • Lift the left speaker straight up, until the power button cable is exposed (about 0.5 inches).

    This is MUCH easier to do if the support bracket along the bottom is removed first. See iMac Intel 21.5" Retina 4K Display (2017) Logic Board Replacement step 25.

    Use a P00.

    To replace it, introduce it like in the photo at the link to be able to hold the right most holes of the chassis and bracket. Replace the first screw, align the bracket to the horizontal and add the screws from right to left. Each one will bring up the next hole in the bracket close enough to screw through. Reverse those directions if you are a leftie.

    Andrew Gough - 回复

  31. iMac Intel 27" Retina 5K Display Heat Sink Replacement: 步骤 31 中的图像 1,3 iMac Intel 27" Retina 5K Display Heat Sink Replacement: 步骤 31 中的图像 2,3 iMac Intel 27" Retina 5K Display Heat Sink Replacement: 步骤 31 中的图像 3,3
    • Gently de-route the power button cable from its groove in the left speaker.

    Pay attention: if pulling out the loudspeaker tear off the wire of the power button, Apple have not any service parts except for the whole rear housing!

    Fabio Braga - 回复

    This is MUCH easier to do if the support bracket along the bottom is removed first. See iMac Intel 21.5" Retina 4K Display (2017) Logic Board Replacement step 25.

    Use a P00.

    To replace it, introduce it like in the photo at the link to be able to hold the right most holes of the chassis and bracket. Replace the first screw, align the bracket to the horizontal and add the screws from right to left. Each one will bring up the next hole in the bracket close enough to screw through. Reverse those directions if you are a leftie.

    Andrew Gough - 回复

  32. iMac Intel 27" Retina 5K Display Heat Sink Replacement: 步骤 32 中的图像 1,3 iMac Intel 27" Retina 5K Display Heat Sink Replacement: 步骤 32 中的图像 2,3 iMac Intel 27" Retina 5K Display Heat Sink Replacement: 步骤 32 中的图像 3,3
    • Lift the left speaker straight up and remove it from the iMac.

    • If the gap between the hard drive and logic board was too narrow to free the speaker cable earlier, gently pull it free as you remove the speaker.

    • Push from the connector end as you pull from the speaker end to thread the cable under the hard drive's right bracket.

    I found it wasn't necessary to remove the speaker from the left side to remove the hard drive. You can remove the screws, and then slide it over to the left — giving more than enough room to access the hard drive.

    Robert - 回复

    me too. don't need to remove it if you only want to change the hd

    Alber Einsten -

    Agreed, wast of time to fully remove the speaker.

    Matthew Gonzalez -

    It is difficult to remove the bottom of the speaker because it bends into the frame. Be careful to remove the power button cable, which also routes in a channel in the bottom of the speaker.

    Eric - 回复

    easier to remove the speakers if you unscrew the front ‘chin strap’ - 6/9 phillips screws that you can see in the picture hold that aluminum piece in place

    flow in - 回复

    Agree. This is MUCH easier to do if the support bracket along the bottom is removed first. See iMac Intel 21.5" Retina 4K Display (2017) Logic Board Replacement step 25.

    Use a P00.

    To replace it, introduce it like in the photo at the link to be able to hold the right most holes of the chassis and bracket. Replace the first screw, align the bracket to the horizontal and add the screws from right to left. Each one will bring up the next hole in the bracket close enough to screw through. Reverse those directions if you are a leftie.

    Andrew Gough -

    The trick with removing the left speaker is that you have to slide it up toward the top of the iMac (continuing to de-route the power button cable carefully as you go) to get it out from under the chin before you lift it up to remove it.

    ace - 回复

  33. iMac Intel 27" Retina 5K Display Heat Sink Replacement, Hard Drive: 步骤 33 中的图像 1,2 iMac Intel 27" Retina 5K Display Heat Sink Replacement, Hard Drive: 步骤 33 中的图像 2,2
    • Pull straight up on the SATA data/power cable to disconnect it from the drive.

    Is the WD hard drive an Apple Special with some internal rom or other thing? Planning to put in a Seagate Firecuda 2TB. Is there some special plug or temperature sensor requirement? Seems like there is only the SATA connector. Will I encounter fast fans? (can load the software to stop that). Think it’s a swap and is “easy”.

    Carl Schultz - 回复

  34. iMac Intel 27" Retina 5K Display Heat Sink Replacement: 步骤 34 中的图像 1,1
    • Remove two 7.3 mm T10 screws securing the left hard drive bracket to the rear case.

    If you have the iMac sitting upright, there is a potential risk of dropping the screws into the iMac casing. Be cautious or lay it down flat.

    Robert - 回复

    Been there done that. Had to flip it and shake the heck out of it to get that srew to fall out!

    webmail54 - 回复

    Left hard drive bracket screws are T8!! Had to remove HD first before derouting left speaker cable.

    Macrepair SF - 回复

    Thank you iFixit for sending a T10 with magnetic tip. You saved me!

    Ben Hannam - 回复

    The bracket screws are T10. The screws on the left side of the SILVER hard drive itself, are T8. If you seem to need a T8, you are actually trying to remove the wrong two screws. Look immediately to the left of the hard drive & you will see the BLACK bracket frame with two screws that use T10.

    jumpoverpuddles - 回复

    I can confirm that some models are indeed a T8 on both sides of the bracket (NOT the drive itself). I have two 2015 A1419 and one is T10, the other T8

    Christopher Crogan -

    Bracket to iMac case screws,T8.

    Which is fine.

    Just as in the next step, T8 or T10.

    Mike Rehbein - 回复

  35. iMac Intel 27" Retina 5K Display Heat Sink Replacement: 步骤 35 中的图像 1,3 iMac Intel 27" Retina 5K Display Heat Sink Replacement: 步骤 35 中的图像 2,3 iMac Intel 27" Retina 5K Display Heat Sink Replacement: 步骤 35 中的图像 3,3
    • Grab the hard drive and left hard drive bracket together.

    • Tilt the left side up away from the rear case, and slide the assembly to the left.

    • Remove the hard drive and left hard drive bracket from the iMac.

    Two notes here:  If you are using OWC’s Thermal Sensor HDD Upgrade Cable, be sure to tuck the cable under the hard drive slightly.  You cannot allow the connector to sit near the top edge since this will not allow the monitor to sit flush with the chassis when it is reattached.  Additionally, the SATA connector does not seem to fit together as snuggly as when it was connect to the HDD, so tape or a plastic cable tie to keep the connection tight may be good insurance to prevent it from coming loose.

    If you are planning on dual booting with Windows 10, the Windows 10 installed failed when the SSD and HDD were both connected at the same time.  I had to disconnect the HDD until Windows 10 was installed.  Note: I did a fresh install on a new SSD not configured as a fusion drive.  If you are planning on doing this as well, use packing tape (or something similar) to hold the monitor in place until after installing the OSs.  Then reconnect the HDD and apply the adhesive to the monitor for a permanent seal.  Good Luck!

    Walter Hayden - 回复

    Hi Walter, i’m looking to replace the broken fusion drive with a SSD, do i have to get the OWC’s Thermal Sensor HDD Upgrade Cable?

    Gregorio Alvarado Sahli -

    Full removal of the speaker is unnecessary - just very carefully unplug the two-conductor power button cable, which is routed through the groove along the edge of the speaker enclosure. Next, unfasten the two large torx screws holding the speaker enclosure to the chassis. Now you can easily scoot the speaker away from the drive mount - move it over just enough to reach the drive mount’s 2 torx fasteners beneath the edge of the speaker (a CM or two). There’s now enough room to easily remove and replace the drive assembly .

    clinton - 回复

    Just wondering if the HDD 3.5 (3TB) in my 2015 27’ 5K iMac case are the ones with the temp control firmware onboard. Just got quote from Auhorised repair centre for 2x the normal price of a 3TB drive. They say I can drop in one i source myself if I like but I don’t want to get it back and have the fans run all the time. Thanks in advance :)

    Declan Casey - 回复

  36. iMac Intel 27" Retina 5K Display Heat Sink Replacement: 步骤 36 中的图像 1,2 iMac Intel 27" Retina 5K Display Heat Sink Replacement: 步骤 36 中的图像 2,2
    • Remove the left hard drive bracket.

    This step is unnecessary. Just leave the bracket in place and set the assembly aside.

    Anthony Zimmerman - 回复

    On Late 2015 27” iMac I found that after removing this speaker, and the Right side one, I could reach under the motherboard and squeeze and disconnect the SATA data connector with a needle-nose and then remove the SATA power connector and slide the cable out from under the logic board without removing the board. The new cable slid in from the hard drive side with little effort.

    chuck solie - 回复

    If switching to an SSD, the posts on the drive can be removed and used on the 2.5” to 3.5” adapter tray.

    Andrew Gough - 回复

  37. iMac Intel 27" Retina 5K Display Heat Sink Replacement, Remove the power supply: 步骤 37 中的图像 1,2 iMac Intel 27" Retina 5K Display Heat Sink Replacement, Remove the power supply: 步骤 37 中的图像 2,2
    • When working on the power supply, be very careful not to touch the capacitor leads or any exposed solder joints on the back of the power supply. Only handle the board by the edges.

    • Disconnect the power supply control cable from the power supply.

    I found this cable very difficult to disconnect, be very careful because the cable is between a black tape and it's stuck very hard to the logic board and the cable is very short and you don't have space to move and separate it from the connection! Be patient and take the time you need

    MrSchaeffer - 回复

    I found than putting the flat end of the spudger at the center of the cable, and tilting it got the cable out without an issue.

    jimboom006 - 回复

    I was able to use the flat end of the spudger on the sides. You can see a tiny little clip on each side. Be very gentle!

    Joseph Ashe - 回复

    I simultaneously used the fingernails on my 2 index fingers to dislodge the tabs and continue to pull the cable out. It took a couple seconds.

    Eric - 回复

    ultimately the trick for me was to just pull hard enough, but that part is the scariest part. any tips welcome

    Boris - 回复

    These connectors seem pretty tough to remove until one understands the latch. Each side of the plug are two little sprung tabs (the tab is part of the spring clip which runs down the side of the plug on each side - makes sense once you see the removed plug!). Squeeze them in towards each other and then gently pull the plug from the socket. No great force, or even the spudger, needed once that is done.

    Pete Mackenzie - 回复

    One more tip, has worked on other cables for me. Fish the skinniest spudger tip you have under the cable, and with a finger of your other hand put opposite pressure on the cable against the spudger and gently work it out

    Mike Fleming - 回复

    If u are right handed, i can recomend to use your index left nail to press de bottom sprung, and a flat spudger on the right hand, came off so easy

    Davo Montiel - 回复

    Davo Montiel's tip worked for me. Use the fingernail on your left index finger to press in the tab on the bottom side of the connector and with the right hand use a flat spudger to press in the tab on the top side of the connector.

    Dan Smith - 回复

    If you have a insulated long nose pliers along with a splugger and can get underneath the cable WITH the long nose pliers on the RIGHT side of the cable, towards the logic board, with the splugger on the LEFT Side of the cable doing the same, you can get the leverage to GENTLY pull this cable out very easily.

    George Martinez - 回复

  38. iMac Intel 27" Retina 5K Display Heat Sink Replacement: 步骤 38 中的图像 1,1
    • Remove the following four screws securing the power supply to the rear case (size T8 or T10 depending on the exact model):

    • Two 23.7 mm Torx screws

    • Two 7.3 mm Torx screws

  39. iMac Intel 27" Retina 5K Display Heat Sink Replacement: 步骤 39 中的图像 1,3 iMac Intel 27" Retina 5K Display Heat Sink Replacement: 步骤 39 中的图像 2,3 iMac Intel 27" Retina 5K Display Heat Sink Replacement: 步骤 39 中的图像 3,3
    • Do not attempt to remove the power supply from the case; it is still attached to the logic board by two cables.

    • Move the power supply board towards the left edge of the case and up to free it from the notch in the logic board.

    This is MUCH easier to do if the support bracket along the bottom is removed first. See iMac Intel 21.5" Retina 4K Display (2017) Logic Board Replacement step 25.

    Use a P00.

    To replace it, introduce it like in the photo at the link to be able to hold the right most holes of the chassis and bracket. Replace the first screw, align the bracket to the horizontal and add the screws from right to left. Each one will bring up the next hole in the bracket close enough to screw through. Reverse those directions if you are a leftie.

    Andrew Gough - 回复

    The top right screw on the power supply actually screws into a stand-off screw connected to the back of the iMac case. Once you have removed the 4 x Torx 8 or 10 screws you can move the power supply enough to see the upper face of it.

    It has a Torx 25 slot in it and comes out easily. This will give you a lot more room for your fingers in Step 40, depressing the tab on the DC power cable connector to pull it out, and when replacing it on reassembly. You may find it won’t require you removing the support bracket as in the suggestion above.

    John Blagden - 回复

  40. iMac Intel 27" Retina 5K Display Heat Sink Replacement: 步骤 40 中的图像 1,2 iMac Intel 27" Retina 5K Display Heat Sink Replacement: 步骤 40 中的图像 2,2
    • Depress the tab on the DC power cable connector, then pull it straight out of its socket on the back of the logic board.

    • If the cable is too difficult to disconnect, you can remove the power supply board and motherboard together.

    Remember to push in the disconnect tab on the large connector. Carefully insert your finger and push on the tab before you pull on the connector.

    Manuel Collazo - 回复

    Thank you Manuel, this was a tricky one.

    David Zemsky - 回复

    Yes, I pulled the whole socket out because I didn’t know about the tab. Fortunately I was able to place it back in. Not sure if it was glued or how it was anchored but it seems to have a solid connection and I can’t easily pull it out by hand. Once I plug the power cable back in should be ok.

    P. Hisada - 回复

    This connector was very difficult for me to remove (even after pushing the disconnect tab). Eventually I had to use a pair of needle nose pliers to wiggle it back and forth out of the socket. A lot of the cables on the my late 2015 model were very tight and a struggle to get out.

    Anthony Zimmerman - 回复

    I'm struggling with this step. I presume that the tab to which you are referring is behind the connector. I can see a plastic protrusion there but it does not move when I push it. Just to get my finger behind it requires the power board to be moved quite a bit btw.

    Dave Sands - 回复

    Pressing on the release on the back with my finger and at the same time using a needle nose pliers to wiggle the connector with my other hand worked for me.

    Kimbo M - 回复

    i could not get it out by the force of my fingers, so what i did was slightly turn the imac 90 degrees so i could reach the area better, push up (so, vertically) the power control board, push in the tab on the bottom of the connector with my right hand, and slightly wiggle the connector out of its socket with a plier

    Boris - 回复

    removing the chin strap (the front bit of metal running along the bottom of where the screen was) makes this much easier as you can rotate the board and get to the underside

    flow in - 回复

    Left index finger pushing on the tab from behind the connector, using needle pliers in right hand to rock up & down did the trick thanks @starfleet_tone

    Frédérick Charette - 回复

    Just be careful! I’ve seen two systems where the socket was pulled fully off! So the logic board then needs repairs or replacing being just a bit too aggressive!

    Dan -

    Needle nose and wiggling worked for us too. We were stuggling like heck with it when just using hands!

    Mike Manasewitsch - 回复

    This is MUCH easier to do if the support bracket along the bottom is removed first - more space to angle the board upwards. See iMac Intel 21.5" Retina 4K Display (2017) Logic Board Replacement step 25.

    Use a P00.

    To replace it, introduce it like in the photo at the link to be able to hold the right most holes of the chassis and bracket. Replace the first screw, align the bracket to the horizontal and add the screws from right to left. Each one will bring up the next hole in the bracket close enough to screw through. Reverse those directions if you are a leftie.

    Andrew Gough - 回复

    I did as Andrew Gough did, per other videos reviewed. Removed it right away. Just makes things easier, more space for just a few screws :)

    Mike Rehbein - 回复

    The top right screw on the power supply actually screws into a stand-off screw connected to the back of the iMac case. Once you have removed the 4 x Torx 8 or 10 screws you can move the power supply enough to see the upper face of it.

    It has a Torx 25 slot in it and comes out easily. This will give you a lot more room for your fingers in Step 40, depressing the tab on the DC power cable connector to pull it out, and when replacing it on reassembly. You may find it won’t require you removing the support bracket as in the suggestion above.

    John Blagden - 回复

    I used your suggestion to remove the stand-off and then used my left hand index finger to press the tab while rocking the connector side to side with a needle nose pliers. Plug came out easily.

    Dan Smith -

    The tab is a pain in the a$$$ to get your finger in there. I was so horrified at the size of the capacitors that I put on gloves to reduce any amount of shock :-) . To get it loose I would pull out carefully the power board as far as I could than I wedge my index finger under and press the tab and slowly pull until I saw a slight gap between the end of the socket and the plug. I than place the flat part of the black spudger or blue one into the gap and use as it as a wedge to help move the plug forward as I kept the tab pressed.

    Andrew Phillips - 回复

  41. iMac Intel 27" Retina 5K Display Heat Sink Replacement: 步骤 41 中的图像 1,3 iMac Intel 27" Retina 5K Display Heat Sink Replacement: 步骤 41 中的图像 2,3 iMac Intel 27" Retina 5K Display Heat Sink Replacement: 步骤 41 中的图像 3,3
    • Be very careful not to touch the capacitor leads or any exposed solder joints on the back of the power supply. Only handle the board by the edges.

    • Flip the top of the power supply towards you, like opening a mailbox, to reveal the AC inlet cable connector.

    • Disconnect the AC inlet cable connector.

    To reassemble, do the same in reverse but keep power supply board more upright than slanted down when re-inserting it in to the lower right corner. The lower right screw post has an protrusion under/behind it and the Power Supply's small 2 wire plug must fit between the front of your Mac and the obstruction. Then it just slides right in and then screw it down.

    Dan H - 回复

    There is a small release tab on the cable.

    Eric - 回复

    Wear gloves when doing this to reduce any shock. The size of those capacitors are very unnerving and scary. Also those solder joints.

    Andrew Phillips - 回复

  42. iMac Intel 27" Retina 5K Display Heat Sink Replacement, Right Speaker: 步骤 42 中的图像 1,1
    • Remove two 10.0 mm T10 screws.

  43. iMac Intel 27" Retina 5K Display Heat Sink Replacement: 步骤 43 中的图像 1,2 iMac Intel 27" Retina 5K Display Heat Sink Replacement: 步骤 43 中的图像 2,2
    • Gently rock the right speaker slightly to the right, to allow access to its cable's connection on the logic board.

  44. iMac Intel 27" Retina 5K Display Heat Sink Replacement: 步骤 44 中的图像 1,3 iMac Intel 27" Retina 5K Display Heat Sink Replacement: 步骤 44 中的图像 2,3 iMac Intel 27" Retina 5K Display Heat Sink Replacement: 步骤 44 中的图像 3,3
    • Use a spudger to loosen the right speaker cable's connector from its socket on the logic board.

    • Pull the connector to the right to remove it from its socket.

  45. iMac Intel 27" Retina 5K Display Heat Sink Replacement: 步骤 45 中的图像 1,3 iMac Intel 27" Retina 5K Display Heat Sink Replacement: 步骤 45 中的图像 2,3 iMac Intel 27" Retina 5K Display Heat Sink Replacement: 步骤 45 中的图像 3,3
    • Lift the speaker straight up and remove it from the iMac.

    Did this tonight. I couldn’t get the right speaker out. But I was able to move it far enough to the right to be out of the way of the logic board.

    Kenneth Cluff - 回复

    You have to remove the five small screws on the lower edge of the iMac to remove a strange bracket or something, like the 21.5” 2012->… iMacs

    Federico Barutto -

    Same here. 2013 27”. If you remove two of the tiny screws along the bottom edge then it comes out.

    Dave Sands -

    This is MUCH easier to do if the support bracket along the bottom is removed first. See iMac Intel 21.5" Retina 4K Display (2017) Logic Board Replacement step 25.

    Use a P00.

    To replace it, introduce it like in the photo at the link to be able to hold the right most holes of the chassis and bracket. Replace the first screw, align the bracket to the horizontal and add the screws from right to left. Each one will bring up the next hole in the bracket close enough to screw through. Reverse those directions if you are a leftie.

    Andrew Gough -

    During reassemble, route the speaker cable behind the two protrusions under the logic board. I am not sure if this makes a huge difference but that’s was the configuration during disassembly.

    Joe - 回复

    As with the left speaker, you need to slide the speaker toward the top of the iMac to get it out from under the chin before lifting up.

    ace - 回复

    For reassembly I had to undo the screws again, then plug in the cable with the speaker module slightly out of its final position and after that insert the module and fasten the screws.

    Stefan - 回复

  46. iMac Intel 27" Retina 5K Display Heat Sink Replacement, Remove the fan: 步骤 46 中的图像 1,3 iMac Intel 27" Retina 5K Display Heat Sink Replacement, Remove the fan: 步骤 46 中的图像 2,3 iMac Intel 27" Retina 5K Display Heat Sink Replacement, Remove the fan: 步骤 46 中的图像 3,3
    • Use the tip of a spudger to disconnect the fan cable's connector from its socket on the logic board.

  47. iMac Intel 27" Retina 5K Display Heat Sink Replacement: 步骤 47 中的图像 1,2 iMac Intel 27" Retina 5K Display Heat Sink Replacement: 步骤 47 中的图像 2,2
    • Peel the black tape connecting the fan to the exhaust duct back slightly.

    • Leave the tape in place on the exhaust duct—you only need to expose the joint to free the fan.

  48. iMac Intel 27" Retina 5K Display Heat Sink Replacement: 步骤 48 中的图像 1,1
    • Remove three 12.4 mm T10 screws securing the fan to the rear case.

  49. iMac Intel 27" Retina 5K Display Heat Sink Replacement: 步骤 49 中的图像 1,2 iMac Intel 27" Retina 5K Display Heat Sink Replacement: 步骤 49 中的图像 2,2
    • Remove the fan from the iMac.

    Use a piece of tape around the antenna cables to keep them in the same order, makes reassembly a little easier.

    Walter Hayden - 回复

    On reassembly, start the fan power connector into its socket while you slide the fan in.

    ebay - 回复

    I left the antennas attached to the wifi card and removed the wifi card with wires attached. I accidentally broke one of the connectors on the wifi card and had to replace the entire card....

    S. Baxter - 回复

  50. iMac Intel 27" Retina 5K Display Heat Sink Replacement, Logic Board Assembly: 步骤 50 中的图像 1,3 iMac Intel 27" Retina 5K Display Heat Sink Replacement, Logic Board Assembly: 步骤 50 中的图像 2,3 iMac Intel 27" Retina 5K Display Heat Sink Replacement, Logic Board Assembly: 步骤 50 中的图像 3,3
    • Use the flat end of a spudger to disconnect each of the four antenna connectors from the AirPort/Bluetooth card.

    • Note the original positions for each connector when reconnecting the cables. From left to right on the card, the antennas are connected in the following order:

    • Leftmost

    • Top

    • Upper right

    • Lower right

    My iMac has a slightly different assembly. There are 2 - T5 torx screws holding little clamps for each cable (2 clamps per screw). Certainly more secure but another size screw to deal with…

    Greg Freeman - 回复

    My iMac also same with Greg mentioned. need to T5 torx driver. A1419. Late 2015, Korean Version.

    Joseph Yang - 回复

    My 2017 has long WI-Fi card, It’s It’s a M.2, cuz no remove antenna. Undo WI-Fi card fix screws and pull out card. Easy one.

    Tanya Chachanova - 回复

    Before I disconnect the cables, I use different color sharpies and draw a different color on each one’s head & then I take a picture of the cables connected to the board. Pic is my reference of which cable goes to what connector.

    Macrepair SF - 回复

    I have a 2017 and I agree with Tanya. There are 2 T4 screws fastening the airport card to the motherboard. It’s easier to remove these and gently pull the airport card straight up out of the motherboard while leaving the 4 antenna wires fastened. You can’t see the connector or the airport card as it’s on the back side of the motherboard but just wiggle it side to side while pulling straight up and you’ll have no problem. I’ve broken off those tiny airport connectors in the past and it’s no fun replacing them.

    Mike Jones - 回复

    same as Greg, did with the torx t5

    Alejandro Piris Nino - 回复

    I have a 2019 iMac and we needed to use a T4 screw

    Mike Manasewitsch - 回复

    My late 2015 has a Airport/Bluetooth card secured with two T5 screws. After removing them you can just wiggle and unplug it from the logic board, without needing to fiddle with the antenna connectors.

    Robin Gottschalk - 回复

    Same as the other comments, in my iMac 27” retina 2015, the WiFi/Bluetooth board is a bit longer and the 4 coax cables are fixed by 2 T5 screws…

    SURIN Dominique - 回复

    When reassembling a removed WiFi card keep 4 antenna leads attached as mentioned by poster (tanya et al) when reassembling as you replace logic board keeping it tilted forward helps in aligning the notch on card for easy reassembly and T3 screws replacingonce card is firmly seated.

    robert - 回复

    When reassembling a removed WiFi card keep 4 antenna leads attached as mentioned by poster (tanya et al) when reassembling as you replace logic board keeping it tilted forward helps in aligning the notch on card for easy reassembly and T3 screws replacingonce card is firmly seated.

    robert - 回复

    Can also confirm it for a Late 2015 iMac, there’s just 2 T3 screws to remove, simple move out the WiFi/Bluetooth board and let cable on place.

    tomax - 回复

  51. iMac Intel 27" Retina 5K Display Heat Sink Replacement: 步骤 51 中的图像 1,3 iMac Intel 27" Retina 5K Display Heat Sink Replacement: 步骤 51 中的图像 2,3 iMac Intel 27" Retina 5K Display Heat Sink Replacement: 步骤 51 中的图像 3,3
    • This is a delicate connection that can be easily broken.

    • Flip up the metal retaining bracket on the iSight camera cable.

    • Pull the camera cable connector straight out of its socket, toward the top of the iMac.

    During disassembly, I taped the cable up and out of the way, as it tends to get in front of things.

    Tony Ross - 回复

    I recall comments here about this being particularly sensitive. I had an issue with no iSight on rebuild, however taking to bits again and seating and reseating this connector a few times resulted in the iSight camera working again (phew).

    Amuseme - 回复

  52. iMac Intel 27" Retina 5K Display Heat Sink Replacement: 步骤 52 中的图像 1,3 iMac Intel 27" Retina 5K Display Heat Sink Replacement: 步骤 52 中的图像 2,3 iMac Intel 27" Retina 5K Display Heat Sink Replacement: 步骤 52 中的图像 3,3
    • Use the flat end of a spudger to disconnect the headphone jack cable connector from its socket on the logic board.

    • Gently push the cable out of the way.

    On my 2017 iMac there is a tiny little cable and connector on the motherboard that is approximately half way along the motherboard and is connected down towards the base of the case. It came free easily when I removed my motherboard but just wanted to remind people to reconnect!

    Stuart Swaffer - 回复

    It’s the microphone cable!

    Koen van Eijk - 回复

    This pulls straight up, towards you.

    Eric - 回复

    I broke mine…when inserted the speaker… How do I replace the headphone jack and cable?

    mmx2000 - 回复

    Lift upwards with the spudger/fingernail, rocking it up back and forth.

    (For those who have not seen this style of connector.)

    Mike Rehbein - 回复

    +1 Missing the step on this 2019 iMac 27” guide to remove mic cable. It’s in other guides, just not here.

    joe - 回复

    I cannot determine how to reconnect the headphone jack cable to the logic board. Are there better pictures anywhere that I could access?

    Ron Owens - 回复

  53. iMac Intel 27" Retina 5K Display Heat Sink Replacement: 步骤 53 中的图像 1,2 iMac Intel 27" Retina 5K Display Heat Sink Replacement: 步骤 53 中的图像 2,2
    • Remove the following screws from the front of the logic board:

    • Two 23.7 mm T10 screws

    • Four 7.4 mm T10 screws

    • One 20.8 mm T25 spacer screw

    • One captive T10 screw

    • This screw is beneath a hole in the logic board. You'll need a fixed screwdriver or the 60 mm extension from an iFixit driver kit to reach it.

    The central screw is very difficult to reach! Use a long and very thin T10 screw driver

    MrSchaeffer - 回复

    On my late 2015 there is another T10 (approx 16 mm long) on the lower edge slightly left of the hole in the logic board giving a total of 4 screws along the bottom edge.

    Konrad Skeri Ekblad - 回复

    I’ve also found an extra T10 in my late 2015 iMac

    luis - 回复

    My 2017 has small flat cable and connector on logic board. And all screws are changed to T 9

    Tanya Chachanova - 回复

    Note: the T25 spacer is behind and to the left of the logic board and below the HDD bracket.

    Tom - 回复

    My 2017 had all T8’s, including the captive screw beneath the motherboard

    Mike Jones - 回复

    My 2017 had 4 T8 screws along the bottom of the logic board, not 3

    greg - 回复

    Late 2015 iMac - mine had all T8 screws and 4 along the bottom row

    Pete Mackenzie - 回复

    On 2019 iMac

    Red = T8

    Orange = T8

    Green = T8

    Yellow = T25

    Mike Manasewitsch - 回复

    2017 here.

    IMPORTANT - note Tanya’s comment. The narrow flat cable in the middle - it’s the mic cable on a *tiny* ZIF. See iMac Intel 21.5" Retina 4K Display (2017) Logic Board Replacement

    Also has the extra bolt middle lower edge.

    All T8 except the yellow T25.

    Andrew Gough - 回复

    In my iMac 27” retina 2015 all screws are T8.

    There is also an another T8 screw between the left and central “orange” on bottom of the CPU board

    SURIN Dominique - 回复

    Just completed and removed logic board. All my screws were T6. The screw beneath is a captive screw, stays retained in the fixture after unscrewing.

    Keith Thomas - 回复

    If I change the logic card on an imac 27’ 2020, will the computer's memory be affected?

    nizarishi - 回复

    There is a 25T stand off that is not listed. It is not on the board but beside or underneath the yellow/red on power supply side.

    Tom Gordon - 回复

  54. iMac Intel 27" Retina 5K Display Heat Sink Replacement: 步骤 54 中的图像 1,3 iMac Intel 27" Retina 5K Display Heat Sink Replacement: 步骤 54 中的图像 2,3 iMac Intel 27" Retina 5K Display Heat Sink Replacement: 步骤 54 中的图像 3,3
    • The hard drive SATA cable can't be removed just yet, but will get in the way of removing the logic board.

    • Pull the cable and connector through the right hard drive bracket. Move the cable to the right side of the iMac, out of the way of the exhaust port.

    Anyone know if models that shipped with only a bladed SSD have the SATA cable still inside? I’m guessing probably not, but haven’t been able to confirm anywhere.

    Jesse Mitchell - 回复

    The cable was so stiff, I didn’t try to pull it through the bracket. Instead I removed the upper screw holding the right HDD bracket in place. Then I rotated it counter clockwise enough to just move the cable behind it and out of the way. Once I did that, I screwed the bracket back into place. I reversed the process when I put the machine back together. It’s a Torx-10 BTW.

    Kenneth Cluff - 回复

    Excellent tip, Kenneth! I did the same, made things easier.

    Dave Hoppenrath - 回复

    Jesse, no SATA cable inside. My iMac came only with the blade SSD and an empty HDD bay, so I have to buy the SATA cable separately.

    mveras1972 - 回复

    the card drive cable is affixed to the heat sink with some sort of adhesive. If it is not placed back similarly, the system cannot sense the heat sink temperature, and the fan will run at full speed continuously. I used double sided tape and pushed it back in adhered position after re-attaching logic board.

    labah - 回复

    the above should read “the hard drive cable” , not card drive (typo)!

    labah - 回复

  55. iMac Intel 27" Retina 5K Display Heat Sink Replacement: 步骤 55 中的图像 1,1
    • Remove two 5.7 mm T10 screws from the top of the heat sink exhaust duct.

    My model (2015) had another screw holding the heatsink duct and a stand-off holding the whole thing attached to the back. Even gently moving the logic board almost got the duct damaged till I realised what was going on so I’d suggest to be careful and DO NOT pull the logic board if it looks like it’s still attached - most likely it is!

    Carlos Ferrari - 回复

    Carlos,

    I am at a bit of a loss. I have a 2015 as well and removed everything else, but the motherboard is still not moving. I found the two, as shown in the picture, but can't find a third one anywhere on or around the heatsink duct. Any help is sincerely appreciated.

    Marc

    MarcW58 -

    Ditto for the 2013 27”. One extra screw

    Dave Sands - 回复

    My model 2546 late 2012 has 2 screws on heat sink shroud. First is on left side. The right can only be accessed with board tilted out a bit.

    Michael Wright - 回复

    I just finished disassembling a late 2017 27” Retina and for the life of me I couldn’t get the logic board to come out. What. I discovered was that there is a part of the heat sink shroud that is held in place by a stand off boss for the power supply. You will need to remove the stand off boss using a T25. Remove carefully and save for reassembly…

    David Brix - 回复

    Same here for late 2014.

    Jamuel Starkey -

    Yes, there is a screw holding down the fan shroud it is an angled black part where the guy's left hand index finger is located in Step 56

    Carl Schultz - 回复

  56. iMac Intel 27" Retina 5K Display Heat Sink Replacement: 步骤 56 中的图像 1,3 iMac Intel 27" Retina 5K Display Heat Sink Replacement: 步骤 56 中的图像 2,3 iMac Intel 27" Retina 5K Display Heat Sink Replacement: 步骤 56 中的图像 3,3
    • Tilt the logic board slightly forward.

    • Lift the logic board straight up and out of the iMac. Be careful not to snag on any of the screw posts attached to the inside of the rear case.

    You should add a step about removing the sata cable here. When following the directions in reverse I forgot to put in back on and had to remove the motherboard again.

    Ken Prows - 回复

    If you are having a hard time removing it, you might have forgot to remove the spacer rod when you removed all the motherboard screws. In my case, it was a T20.

    Eric - 回复

    The 2017 iMac has a small cable with a ZIF connector coming from the bottom of the machine that needs to be detached from the logic board before it can be removed.

    greg - 回复

    I can confirm this. As i recognized the cable after i removed the logic board i had some trouble to find the spot where to plug it in.

    sebastian.wittl -

    If you are having a hard time removing it, you might have forgot to remove the spacer rod when you removed all the motherboard screws. In my case, it was a T20. This is in my late 2015 the case. Just like Eric said 11-01-2020.

    John - 回复

    Same for late 2012. For those curious the spacer is just to the left and appears to attach to the heat sink.

    skiingjoo -

    The iMac 27” didn’t come with the PCIe SSD card so of course there wasn’t the necessary screw to mount one.

    Here is the screw to order;

    https://www.ebay.com/itm/283482947478?ch...

    What I did was find a screw that fit. Happened to be the case screw from the iFixit external 2.5” case but since that was a countersunk screw, I fabricated a washer for it.

    Mike Rehbein - 回复

  57. iMac Intel 27" Retina 5K Display Heat Sink Replacement: 步骤 57 中的图像 1,2 iMac Intel 27" Retina 5K Display Heat Sink Replacement: 步骤 57 中的图像 2,2
    • When reassembling your iMac, be very careful to align the exterior I/O ports correctly. The logic board can sit crooked even when secured with all its screws.

    • You can use a USB flashdrive or ethernet cable to ensure the logic board is seated correctly while you screw it in.

    To help me line up the IO ports, I filled all the USB ports on the back with thumb drives before I screwed the Logic board back down. Worked like a charm!

    Alex Grayson - 回复

    Ugh! Wish I saw this before. I did this mod and failed to do this step and now only one Thunderbolt 3 port works at a time and the SD card has to get pushed way further to get it to read. I hate taking this thing apart!

    scolvin - 回复

    iMac (Retina 5K, 27-inch, 2017) の場合、Thunderbolt 3(USB-C)ポートの位置がシビアです。

    Ethernet、USB 3ポート、Thunderbolt 3(USB-C)へ最低でも各1本(合計3本)を差し込んだままの状態でロジックボードのネジを閉めるようにすることを強くおすすめします。

    EthernetケーブルとUSBメモリの2本を挿して調整し組み上げましたが、最終的にThunderbolt 3(USB-C)が刺さらないことが後で判明し、結果組み直しをしなくてはいけませんでした。

    For iMac (Retina 5K, 27-inch, 2017), the location of the Thunderbolt 3 (USB-C) port is severe.

    It is highly recommended to close the logic board screws with at least one cable each (total of three) plugged into the Ethernet, USB 3 port, and Thunderbolt 3 (USB-C).

    I plugged in two Ethernet cables and a USB memory stick, adjusted and assembled the board, but in the end I found out later that the Thunderbolt 3 (USB-C) would not stick, so I had to reassemble the board.

    Translated with www.DeepL.com/Translator (free version)

    JapanWolf - 回复

    貴重な情報ありがとうございました!

    Midori Doi -

    I do this job fairly frequently and I have a small box in my iMac tool kit containing a headphone jack, four USB drives, a short two-ended Thunderbolt cable and the end of a red moulded Ethernet cable to keep things aligned from the back when screwing the logic board back into place.

    I loosely screw all the screws in, then tighten them gradually, going round the board several times to make sure it lands in exactly the right position.

    John Blagden - 回复

  58. iMac Intel 27" Retina 5K Display Heat Sink Replacement, Heat Sink: 步骤 58 中的图像 1,3 iMac Intel 27" Retina 5K Display Heat Sink Replacement, Heat Sink: 步骤 58 中的图像 2,3 iMac Intel 27" Retina 5K Display Heat Sink Replacement, Heat Sink: 步骤 58 中的图像 3,3
    • Remove the four 7.5 mm T8 screws from behind the GPU on the logic board.

    • These screws are set inside large, spring-loaded Phillips #2 screws. To prevent the larger screws from spinning when you loosen the T8 screws, hold them with a fingertip or Phillips #2 screwdriver.

  59. iMac Intel 27" Retina 5K Display Heat Sink Replacement: 步骤 59 中的图像 1,1
    • Remove the bracket from behind the GPU heat sink.

  60. iMac Intel 27" Retina 5K Display Heat Sink Replacement: 步骤 60 中的图像 1,1
    • Remove four black stickers from the back of the CPU heat sink.

  61. iMac Intel 27" Retina 5K Display Heat Sink Replacement: 步骤 61 中的图像 1,1
    • Remove four 12.3 mm T10 screws from the back of the CPU heat sink.

  62. iMac Intel 27" Retina 5K Display Heat Sink Replacement: 步骤 62 中的图像 1,3 iMac Intel 27" Retina 5K Display Heat Sink Replacement: 步骤 62 中的图像 2,3 iMac Intel 27" Retina 5K Display Heat Sink Replacement: 步骤 62 中的图像 3,3
    • Remove the spring plate from behind the CPU heat sink.

    • Lift and remove the backing plate from behind the CPU heat sink. The backing plate has two posts that fit into alignment holes in the logic board.

  63. iMac Intel 27" Retina 5K Display Heat Sink Replacement: 步骤 63 中的图像 1,3 iMac Intel 27" Retina 5K Display Heat Sink Replacement: 步骤 63 中的图像 2,3 iMac Intel 27" Retina 5K Display Heat Sink Replacement: 步骤 63 中的图像 3,3
    • Lift the heat sink up from the logic board.

    • The CPU will most likely stick to the heat sink, so be careful about where you put it down.

  64. iMac Intel 27" Retina 5K Display Heat Sink Replacement, Heat Sink Replacement: 步骤 64 中的图像 1,3 iMac Intel 27" Retina 5K Display Heat Sink Replacement, Heat Sink Replacement: 步骤 64 中的图像 2,3 iMac Intel 27" Retina 5K Display Heat Sink Replacement, Heat Sink Replacement: 步骤 64 中的图像 3,3
    • The CPU will most likely be stuck to the heat sink with thermal compound.

    • Insert the flat end of a spudger between the CPU and heat sink.

    • Gently pry the CPU up by slightly twisting the spudger.

    • Remove the CPU from the heat sink. Be careful not to touch the contacts.

    • To reinstall the heat sink, see our thermal paste guide for instructions on cleaning and preparing the thermal surfaces and applying a new layer of thermal compound onto the CPU and GPU dies.

    • For the VRAM chips surrounding the GPU, install thermal pads or a thick thermal paste such as K5-PRO, rather than regular thermal paste.

    • Install your CPU into its socket on the board, not on the heat sink. Check the orientation and make sure it lines up correctly in the socket. Follow the instructions specific to your CPU type to apply fresh thermal paste to the surface of your CPU. Then, reinstall the heat sink over the top.

    If like me you’re upgrading the CPU - or maybe just reapplying thermal paste - you’re in for a treat when you try to reinstall the heatsink…

    That spring is very strong and you’ll have to flip the board to put it back. BUT that might shift the CPU out of place and when you do apply force to secure the spring you might bent or break the CPU depending on how much it shifted.

    Mine got bent (took me hours to troubleshoot) and I was lucky to unbent with no damage.

    What I recommend is to secure the GPU screws first - go all the way! - and then proceed with the CPU. Still be very careful and if it doesn’t feel right just stop take everything apart and do over. Better safe than throw hundreds of dollars worth of CPU in the trash…

    Carlos Ferrari - 回复

    Hey Carlos! Even though you warned me before I got to this step I still managed to mess it up! CPU shifted, corner wasn't in the socket properly so when I tightened heatsink it bent corner of CPU and looks like it moved some pins a little. So I suppose I need to try to bend back CPU and pins - otherwise I need to back replacements… or give up..

    William Pinnell - 回复

    How tight should the CPU heatsink screws be? Do you screw them down all the way down to the board, or should there be a gap between the back plate and the mobo? I wish I took a pic of the back of the heatsink before taking it off!

    Ken Prows - 回复

    @xev All the way to the board, or until they suddenly stop turning. No need to take photos—we provide all these high resolution images so you don’t have to do that. Click any image to blow it up. Here’s one showing the heat sink screws in their original installed position.

    Jeff Suovanen -

    So difficult to reassemble, don't crush your CPU.

    Easy Repair - 回复

    I wish I read these comments sooner, and followed my gut. The iMac in question needed a cleaning and I completed that, and then pondered replacing the thermal paste? It was not worth it as the iMac is not functioning now and after 2 attempts, still no go. I just broke my iMac. I only have the trickle led light on now.

    I feel that unless it’s needed for temp reasons, I would not have done it as like the other comments here, it is very difficult to put the heat sink back on. I should have resisted the urge for perfection and gone by the “if it ain’t broke, don’t fix it”.

    James Orwin - 回复

    Update, three times a charm? took apart, sure enough, cpu bent in one corner, looked fragile/hard to bend back. I pulled out a 2013 board, examined how tight screws were tightened to board. They are not screwed all the way down and there was a gap between the screw and the board, thus you don’t fully tighten the screws until they stop or run risk of damaging the chip and socket. Unfortunately CPU socket in 2013 not same as 2012 so I could not just pull the chip from the 2013 and stick it in a 2012. Decided to clean it up one more time, position, new thermal paste. Put heat sink back on, slid one finger through the back to support position as best I could, turned over logic board and began to put the screws in. This was still extremely difficult, managed to get the screws in and then I moved over and did the GPU screws. I did not tighten the CPU screws all the way down, left a gap similar to the sample board. Now it boots. Waiting for display cable ordered to mount the display. Examine CPU screws first! :)

    James Orwin - 回复

结论

To reassemble your device, follow these instructions in reverse and use our Adhesive Strips Guide to reattach the display glass.

Take your e-waste to an R2 or e-Stewards certified recycler.

Repair didn’t go as planned? Try some basic troubleshooting, or ask our Answers community for help.

7等其他人完成本指南。

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5条评论

Hi All,

did you notice something unusual in the contact surfaces between GPU and Heatsink ?

Some unit are hotter than others, we are discussing in a forum if it may be a problem with the cooling system. My 5K with the M295X can top at 100°C and others even 108° with consistent louder fan (+400rpms for the same task).

Massimiliano Parisotto - 回复

Can you tell me if the high temps, 106 Celsius, in the iMac retina GPU should be a big concern or not? I am considering returning my iMac in the next few days because of this.

Anthony Barone -

I would highly recommend using at the very least, an anti-static wrist band when attempting any computer repair to this level.

In the 1980's I ran Commodore UK's service department. At that time we suffered a 30% failure rate of PC's that were being configured and assembled in our factory. The failures ceased the moment anti-static precaution were introduced!

jerrypank - 回复

Asking a question for this since my iMac 17,1 is due for an upgrade.

Does anyone know how thick of a thermal pad can be used on the VRAM chips? I am not a fan of using compound for these. (Still in the learning stages of this topic)

Also has anyone attempted to use a graphite thermal pad for the CPU or GPU?

Thanks in advance!

Andrew R. Reimisch - 回复

what size thermal pad works best on a 2014 imac 27 inch retna for the gpu memory?

thanks

Chris

Murphy Brown - 回复

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