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オリジナルiPad Pro の小さいサイズのモデルです。2016年3月31日に発売されました。9.7インチのディスプレイ、A9Xプロセッサ、32/128/256 GB容量のオプションがあります。シルバー、スペースグレイ、ゴールドとローズゴールドのカラーオプションがあります。

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iPad Pro Power Issues After Screen Replacement

I have an iPad Pro 9.7 that a customer brought in with a broken LCD/Digitizer.  The tablet still worked from what we remember.  We disassembled the tablet and removed the broken LCD/Digitizer.  Of course, we put a guitar pick in-between the battery and the motherboard as we normally do before disconnecting the old screen and connecting the new LCD/Digitizer (got part from Mobile Defenders).  The new LCD/Digitizer works perfect so we transferred the home button and sealed back up the tablet.  We tested it shortly, but apparently did not catch the fact that the battery is now having issues.


Customer brought it back due to boot loop issues.  The battery percentage will go anywhere from 1%-4%, or as high as 11%, but no more.  I have disassembled it down to the motherboard, clean the connections underneath and on the battery with no change.  I also have removed the battery and replaced it, but the new battery has the same result.  In fact, I let the new battery drain all the way down, and now with the new battery the iPad gets stuck in a boot loop.  It does not charge the battery at all, for as soon as I unplug the iPad, it turns off.  I put the old battery back in and can get it to turn on again.  When you plug a cable in the charging port, it DOES turn on the tablet and it DOES show charging, though sometimes I have to unplug and plug it back in for it to show the charging symbol.  Suggestions?

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If you’re confident the replacement battery works, then I would test the charge port by checking continuity between the Lightning port and the board…you have to make sure the signal/line is complete all the way through. ZXW will help you here as the board is fully mapped out.

If the charge port looks good, then consider replacing Tristar.

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Thank you for that information! I can tell you microsoldering is WAY beyond what I can do. I'll be lucky if I can get a lightning cable replacement done successfully. Maybe I will have to send it into a company that can replace this tristar. I will see if I can figure out how to check continuity. If you can give step by step Minho, that would be much appreciated. :)

さんによる

I have a similar problem after replacing my screen+digitizer. I think the pick I used to separate the battery connector slipped. Now it keeps re-starting and won’t charge. Any ideas?

さんによる

did you find out what was causing the problem?? was it the tristar? is there a company that can replace it?

さんによる

Ideally, you want to find someone local but good workmanship trumps locality. There are many shops worldwide that do this so you shouldn't have any problems finding them. Talk to them and ask how they do their work. Focus on troubleshooting, as opposed to shotgun replacement, and good practices like proper cleaning of boards once completed etc.

If you can't find one locally, then consider mail-in repair. There are several reputable micro-solderers patrolling this forum. You can also click on my profile to learn more about my services, at the very least, it can serve as a data point.

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Scott Thompson さん、ありがとうございました!
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