any way to clean/repair the power button part of touch ID on a A1932?

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2018年13寸视网膜显示屏MacBook Air

期待已久的MacBook Air更新到来，带来了全新的英特尔酷睿i5处理器、升级了的视网膜显示屏以及众多其他更新。发布于2018年11月7日。

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Rick Wijnveld @rick86

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发帖于: 2023年6月20日

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any way to clean/repair the power button part of touch ID on a A1932?

A client brought in a macbook air A1932 on which they had spilled a drink. They had acted quick enough turning it off, and laying the laptop upside down, while opened, with the keyboard on a towel to let the liquid drain and be absorbed by the towel.

Customer brought the laptop to me (6 days later) because the power button remained depressed and wouldn't return to the normal "resting" position and touch id was not working.

There was a bit of corrosion on the audio board which cleaned up easily enough and some liquid residue in the keyboard which also was easy enough to clean. (had actually just replaced the keyboard for this customer only a week before this happened)

Touch ID came back to life after cleaning and the power button part on the back, in a mechanical sense started working again, but not in a electrical sense.

The button now moves back to the resting position after being pressed and you can hear it click again but pressing it won't turn the macbook on or off.

Is there any way of cleaning the actual contact surface of the power button part without damaging the switch?

Replacing the button entirely is not a option as I, as a independent repair shop, do not have access to apple's servers to pair the new touch id button with the T2 security chip. Also, the customer cannot afford what apple charges for such a repair.

My client is going to visit one of the authorized service centers to get the switch replaced.

Wish I could get my hands on another button with the same kind of defect though. Because as I was looking a bit more at the images I took of the underside of the switch, I noticed that the actual power button seems to be what they sell on aliexpress as 4 pin, 2mm x 3mm x 0.6mm, tactile micro push buttons. So it should be possible to take a hot air station or hot tweezers to remove the old button and replace it with a new one. (included image of the touch id power switch is from google images as it has much better quality than what my phone can produce.)

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Dan @danj 声誉积分: 479.4千 Self employed contract worker 35 329 971 · Answer 1 · 2023-06-21T07:00:23-07:00

Dan @danj

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发帖于: 2023年6月21日

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Ouch! Sadly they will need to take the system to Apple as only they can replace the TouchID button (I suspect they just replace the logic board with its mated button).

Sorry not what you want to hear.

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so no way to clean/repair just the power button part on the switch without replacing the switch? how about a way to set macOS to ignore impulses from the power button? My client contacted me saying that the laptop now randomly shuts down, which leads me to believe that the actual switch of the power button is randomly closing the circuit from time to time leading to the laptop turning off. I think if I can set the system ignore impulses from the power button, the customer could continue to use the system without a problem as touch id still works and depend on opening the lid or connecting the charger to turn the laptop on.

由 Rick Wijnveld 完成的 2023年6月24日

@rick86 - Other then severing the buttons lines and hardwire a new blister button in its place then mounted to your case where you can access it I can’t see a way to fix this.

I think that’s a reach and in the end not something I would even attempt.

由 Dan 完成的 2023年6月24日

My client is going to visit one of the authorized service centers to get the switch replaced. Wish I could get my hands on another button with the same kind of defect though. looking a bit more at the images of the underside, the actual power button seems to be what they sell on aliexpress as 4 pin, 2mm x 3mm x 0.6mm, tactile micro push buttons. So it should be possible to take a hot air station or hot tweezers to remove the old button and replace it with a new one.

由 Rick Wijnveld 完成的 2023年6月25日

@rick86 - Well! You found what I couldn’t a few years ago! Even still very risky repair… If you F-Up you own the system! Skills and tools would be what would hold most back from the task.

由 Dan 完成的 2023年6月26日

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2018年13寸视网膜显示屏MacBook Air

any way to clean/repair the power button part of touch ID on a A1932?

Update (06/25/23)

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