Chosen Solution
Hi there, Water got on the trackpad and the keyboard. Some keys do not work or show other keys that have been pressed, although this is not the case. When a new replacement keyboard is connected, all keys work normally again - except for A and D! The trackpad works without problems with the defective original keyboard and also with the replacement keyboard. Now the question is, is this a keyboard problem or a trackpad problem or even a motherboard problem? The macbook works flawlessly except for the keyboard. There are no problems whatsoever with an externally connected keyboard. I have a Macbook Air M1 late 2020 MGN63D/A bought in europe. Please help.
Try an external keyboard, and clean slot that the replacement keyboard plugs into on the board. Clean with electrical contact cleaner. double check that the connection is solidly in. May be a little line to show you that it is fully plugged in.
The keyboard decoder is part of the trackpad, you’ll need to replace it MacBook Air 13" Late 2020 Trackpad Replacement
