Chosen Solution
I recently had water damage on my Macbook Air A1465. It wasn’t turning on I opened it up and saw some corrosion and cleaned with Isopropyl. Now it turns on but not all the keyboard keys work. The only ones that don’t work is the top right area. So volume up, down, mute, delete, and also some other random ones like 6 and other top row function keys. What is the reason? How can I fix?
Your best bet is to fully disassemble the machine, let it dry fully, clean any corrosion with rubbing alcohol. Then you’ll want to replace the keyboard, unfortunately you will have to do a full keyboard replacement, and it will take some time and patients. MacBook Air 11" Mid 2012 Upper Case Replacement Start with the above guide, you will then want to continue on and peal back the black backlight, and then will need to remove about 100 tiny screws to swap your keyboard. This MAY help solve your problem, but no guarantee.
