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.
Update (06/25/23)
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.)
Is this a good question?