My phone is not on

Hi @returntomonke ,

Do you think that it is booting into Windows?

If so try connecting an external monitor to the laptop's HDMI port (or mini DP port) and check if it shows a display or not. Don't forget to press Fn + F8 to toggle the display between the laptop screen only, the external monitor only or both on together.

If not, can you get into BIOS on startup with a display? Press F2 on startup and check

Hi @returntomonke

It seems as though it is not starting or at least not passing POST (Power On Self Test).

Not much happens until it passes POST (which doesn’t take long) so there may not be any lights except the Power light or perhaps sometimes a blinking caps lock or power light indicating a problem if it fails during POST (blink error code)

How did you reset the BIOS?

If only by disconnecting the battery and holding the Power button operated for 15 seconds then in this instance it may not have been enough to restore the BIOS to its default values.

Try a full power refresh by disconnecting the main battery and removing the motherboard so that you can remove the CMOS battery from the underside of the motherboard. Remember the orientation of the battery before removing so that you reinsert it the right way. Usually it is +ve on top

When you have the battery out, measure its voltage and if it is <2.6V DC, replace it. It looks like a CR2032 coin cell battery so it is commonly available most everywhere. Check the type number on the battery just in case it is another type. Checking the battery voltage allows enough time for the BIOS to fully reset as now there is no power at all on the motherboard.

If you haven’t got a DMM (digital mulitmeter) then allow a minute or so, before reinserting the CMOS battery to allow the BIOS to default back to its factory default settings, hopefully restoring any settings that were corrupt and preventing a normal start

Then reinsert the CMOS battery, reinstall the motherboard, reconnect the main battery, close up the laptop and try turning it on.

Here’s an image taken from a teardown video of the laptop, showing the location of the CMOS battery on the underside of the motherboard.

(click on image to enlarge for better viewing).

If it still fails after this then it is a motherboard problem

Hi,

Circuit restoration is not for the fainthearted so I hope you know what you’re letting yourself in for as usually it ends up being a labour of love and costs more in time (and sometimes parts) than is sometimes warranted.

You don’t state what parts are missing so here’s the schematic for the amplifier that should help.

It shows the compete circuit with component type and values so you may just have to start tracing through the amp, using the circuit to where the “missing” parts are and find out what type and value component they are (were?) as per the circuit diagram and then search on places such as digikey.com or mouser.com to find replacements. If you are unlucky and the component is “proprietary” e.g. the power transformer then this makes it more difficult because it may no longer be available and you have to contrive using the nearest suitable replacement.

After you have replaced all the missing parts then you need to check if it works as chances are that it won’t. Ask yourself why were there parts missing in the first place? Have they been removed because someone else tried to fix it and gave up or used the amp as a “donor parts” amp to fix another one perhaps?

After checking that the power transformer is OK i.e. not short circuit, open circuit or short to earth (if the original is still there that is and not a new replacement that you installed) and that you’re not likely to blow the fuse straightaway, you can apply power to the amp for the first time.

Be prepared to remove the power immediately if some components start to get hot very quickly and they start to smoke.

If nothing at all happens when the power is connected and the amp is turned on, then at least you have the schematic to find out why it is not powering on.

I’m certainly not trying to discourage you from doing this, just letting you know what may be in store for you.

Have fun ;-)

Hi,

Here’s a metric to AWG conversion chart. Be aware that the metric sizes are only approximate and not exact. See this link

If it is not metric post the make and model number of the crimpers or perhaps an image so that the numbers can be seen.

Here’s how to do this on iFixit 在已经存在的问题里加入图片

Hi,

The tablet will need to be opened and inspected for damage.

Given that the tablet is heating up without it being turned on I suggest that you open it up as soon as possible and disconnect the battery from the systemboard. Then you can relax and take your time inspecting and testing for any damage.

Here’s the ifixit LG G Pad 10.1 Battery Replacement guide that will help you to do this. Once the tablet is open go to Steps 4-6 to see how to disconnect the battery. You can leave the battery in situ, just disconnect it.

If doing this yourself seems too daunting take your tablet to a reputable, professional mobile phone or electronics repair service and ask for a quote. If you decide to do this, do it sooner than later to minimize any further damage to the tablet.

Hi @mogee ,

There are various services online that supply software (at a price) that will reset the waste ink pad counter so that you can use the printer again after the pads have been cleaned or replaced.

There are some that offer a free trial so that you can use the printer but it only resets back to 90% used status i.e. 10% of pad life left before the message reappears.

Search online for reset Epson 837 waste ink pad counter to get results. Here is just one example of what I mean.

Hi

I’ve had this issue before and there isn’t a lot you can do BUT there is something the person who sold it to you can do ,the person who sold it to you can contact apple support and can exchange details and hopefully have the password reset but that’s if they are willing to cooperate

If they don’t do anything about it,if you bought it on eBay see if you can return the item and If you can’t return the item, start a case/claim to get a full refund

I hope all goes well for you

Any questions please ask

Thanks:)

Jessica, first you want to check your audio and video cable connections to the system and your television. Make sure they are properly connected.

Hi @harikrishn56714

Try replacing the battery and check if that resolves the problem.

Here's a video that shows what to do.

Search online for BLP799 battery to find battery suppliers that suit you best.