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Everything works except the power button. The trackpad works and everykey onn the keyboard does as well.
Whenever I connect the charger, the computer automatically turns on. Battery is connected and works perfectly. If I connect the charger and then disconect it, the computer runs on the battery with no issues whatsoever.
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OK,
So what could the issue be???
A common issue with older batteries is they swell up as they get old. Some really expand quite a lot! When that happens the battery presses against the bottom cover and the upper case pressing on the trackpad.
So what can happen is the bottom cover pops off or which I suspect happened here damages the trackpad and/or the trackpad cable!
This series uses the trackpad as a way station for the keyboard signals and both the keyboard and trackpad signals are then passed to the logic board via a single cable.
So… You’ll need to start by replacing the MacBook Air 11" (Mid 2011-Mid 2012) Trackpad Cable
Then if that doesn’t fix things replace there trackpad MacBook Air 11" (Mid 2011-Mid 2012) Trackpad Here’s the guide MacBook Air 11インチ Mid 2012 トラックパッドの交換
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I just replaced the flex cable and everything is just as it was before. Should I go for the trackpad then?
Yes, that's the next action.
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I had a similar issue on the exact same computer type - really frustrating to always have to take out the battery and put it back in to turn it on. Turns out it was the replacement keyboard I bought because the caps lock key on the original one was loose.
If it is indeed the keyboard, then don’t do what I did and purchase an extremely cheap one with a backlight that broke after installation. Doubt it’s a battery or power related issue since Apple devices usually automatically power up when you plug in the charger.
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Let’s be sure, install this gem of an app! CoconutBattery take a snapshot of the apps main window and post it here for us to see iFixitでの質問に画像を追加する方法
Dan さんによる
@danj I had to disconnect and reconnect the battery because the computer wouldn't turn on when I pluged in the charger. I downloaded the app and posted an image. Thanks!
FrnkVnny さんによる