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Power button doesn't work (everything else does)

Hi guys,

I've got a MacBook Air with a power button problem. I've repaired it and everything else is fully working. The machine doesn't power on or power off using a button (it does from the power source and works fine on the battery as well).

I've already replaced everything which possibly could be related to the problem including: keyboard, trackpad, trackpad flex, battery, SSD. Nothing helped.

Logic board has been washed in safe-wash, isopropyl and baked in the reflow oven.

The button isn't working. Do you have any ideas?

Maybe SMC replacement?

Contesta esta pregunta Yo también tengo este problema

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Let's make sure were the failure is. Disconnect the battery first as we only want the MagSafe to power the system.

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Then see if the power pads allow you to start the system. short across these two pads for a moment then disconnect the MagSafe to turn the system off. Try this a few times does it work each time without fail? If so lets now start the system up again and this time using the power pads hold the connection a bit longer the system should shut down. Did that work?

If it did we know the issue is within the uppercase, not the logic board.

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Why I haven't thought about it?!

It works - turning on from the pads.

But at this stage I've got no clue what might be faulty. As above, I've tried a few new components.

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So your issue is the Uppercase its self!

Basically, the problem is within the keyboard assembly. You'll need to strip the system back down and see if you can find a damaged connection from the button assembly which connects to the keyboard or you'll need to replace the keyboard (Uppercase)

- de

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Sounds like there is a corroded trace or component on the board that is burnt out. As long as you have for sure tried a known good tpad and keyboard, then I'd say you need a board level repair. See bio for somewhere you could send it plenty of people more than happy to help.

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Kris estará eternamente agradecido.
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