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Keyboard and Trackpad only work in Diagnostic mode

After liquid damage to the MacBook Air, I’ve been able to get it nearly operational with a lot of cleaning w/ isopropyl alcohol & contact cleaner. However, I cannot get the trackpad or keyboard to work. I replaced the ribbon cable with one from iFixIt and now the trackpad & keyboard only work in Diagnostic mode.

Weirdly enough, the caps lock light is always on and remains on if I boot into macOS or Recovery mode. If I hold D when booting, I can get into diagnostic mode & can press caps lock to turn the light off. The trackpad functions in this mode.

I’ve reset PRAM and SMC multiple times. Any help on this would be greatly appreciated. Thanks.

Contestado! Ver respuesta Yo también tengo este problema

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What is the errors (if any) you got in diagnostics?

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@danj No errors at all since cleaning the entire logic board w/ isopropyl.

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You likely need a new Trackpad and/or the trackpad cable.

This series uses the Trackpad to carry the keyboards signals to the logic board via the combo cable.

Imagen de MacBook Air 13" (Mid 2013-2017) Trackpad Cable

Producto

MacBook Air 13" (Mid 2013-2017) Trackpad Cable

$14.99

Imagen de MacBook Air 13" (Mid 2013-2017) Trackpad

Producto

MacBook Air 13" (Mid 2013-2017) Trackpad

$49.99

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6 comentarios:

But then why would the trackpad work fine in Diagnostic mode? If this was a hardware failure, the trackpad and keyboard wouldn't work at all.

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The trackpad is the junction of the two signals which then go to the logic board. I often find liquid gets to the connector area damaging it or the circuity on it gets damaged. Time to replace both!

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@macstainless - So what was it the cable or the trackpad?

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Was both. I have no idea why it would only work in Diagnostic mode but swapping both out got it up and running. Thanks for the input!

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Oh, this sucks.

I had just posted on another Ifixit post that I too was seeing the KB/Trackpad work in diagnostic mode and was optimistic it was not a HW issue and was next going to try an OS install.

At almost $100 to fix this with replacement parts, it seems another used Macbook would be more cost effective.

Especially since the 128GB storage is getting hard to maintain anymore.

Knowing me I'm still going to try the OS re-install on a separate disk, I'm a sucker for punishment that way.

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