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2015 Retina MacBook Airの修理情報とガイド。モデル番号はA1534

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Keyboard and trackpad not working

I changed my battery carefully, and after that Keyboard and trackpad stopped working.

This seems to be a common problem and I have spent a lot of time going through all proposed solutions without success.

I did all the boot resets suggested. I bought a replacement flex cable, which didn’t do anything. I then bought a replacement trackpad thinking that was the problem, again with no success.

At this point I am thinking maybe I screwed up the motherboard. I have not replaced the keyboard as I assumed since the new trackpad didn’t work the issue is not the keyboard.

Any suggestions? Computer works fine with bluetooth keyboard and trackpad, but not the built-in ones.

Thank you

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did you follow this guide? Retina MacBook 2015 バッテリー の交換

Did you note the warning?

To avoid logic board damage, when your Macook repair is complete but before powering it on, connect it to low-voltage power using a 5-Watt iPhone charger and a USB-C to USB-A cable. These accessories are not included with your MacBook, so make sure you have them ready before you begin.

See if that fixes things.

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I did not actually. So maybe I fried something. After that initial battery replacement every time I opens the laptop I did do that step, but not the first time.

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M S さん、ありがとうございました！
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