MBP wont turn on after logic board maintenance

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MacBook Pro 13" Retina Display Mid 2014

Model A1502 / 2.6 GHz (Turbo Boost up to 3.1 GHz) or 2.8 GHz (Turbo Boost up to 3.3 GHz) dual-core Intel Core i7 processor with 4MB shared L3 cache.

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B1P @ziobru

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发帖于: 2024年10月28日

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MBP wont turn on after logic board maintenance

I've removed the logic board of my MBP 13 retina mid 2014 to do some maintenance from dust. I've now assembled it back in place, and I'm unable to turn on the MBP. I've tried by removng the battery connector and to use only the magsafe, it will stay on amber color, but pressing the power button will do nothing. I've then tried connect the battery back and reset the SMC, the macook magsafe light will become green for a wile and back on amber.

Is there any other operation I can try to do? I'm looking at the connections on the logic board and all is correctly connected. The MBP was ok before I remove the logic board, any idea?

Here are the pictures

@danj here is a picture of the screen. The panel is on I think ?

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DanJ @danj 声誉积分: 495.6千 Self employed contract worker 35 338 974 · Answer 1 · 2024-10-28T07:07:34-07:00

DanJ @danj

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I would focus in on the keyboard cable connection as that tends to be an easy miss! I use a small strip of electricians tape to create a pull tab so I can grasp the ribbon cable to push it into the ZIF connector fully and squarely, then carefully fold the latch down so the ribbon cable is electrically connected.

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I need to check for this, but if SMC reset work can the keyboard be excluded?

由 B1P 完成的 2024年10月28日

@ziobru - You would have to ask🤦!

The keyboard has two states, SBI and Apple enhanced. What you are seeing is the SBI function not the running keyboard function. It’s likely some of the lines are working but not all of them.

由 DanJ 完成的 2024年10月28日

@danj ok, thank you. I will do a check. The keyboard cables are near the battery? Can you link to a picture?

由 B1P 完成的 2024年10月28日

@ziobru - Review Step 27 in this guide MacBook Pro 13" Retina Display Mid 2014 Logic Board Replacement

由 DanJ 完成的 2024年10月28日

I've checked the connectors and all seems in place. The magsafe will stay on amber :(

由 B1P 完成的 2024年10月28日

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MacBook Pro 13" Retina Display Mid 2014

MBP wont turn on after logic board maintenance

Update (11/13/24)

Update (03/20/25)

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