Internal Keyboard shows up on system profiler but does not function
Hoping someone can solve this mystery for me:
I just replaced the top case on my son’s MacBook Air. After reassembly, internal keyboard and power button have zero response, but trackpad works fine.
Checked the keyboard cable - it’s seated properly. I have tried two different top cases, one A stock, one B. Same result with both.
Trackpad flex cable looked fine, but changed it just to be sure. Again, no keyboard response, trackpad is fine.
Boots when power cord plugged in, but I can’t reset SMC since the keys are not communicating.
Keyboard shows up in System Profiler, so I’m thinking I can rule out a logic board issue…??
Deleted .plist files as instructed in another forum.
Pref Pane in system info: Version 14.0, visible, 64-bit
It’s an old machine, but it’s in good shape and perfect for a teen, so I’d like to keep it working. but I’m at a loss for what to do next.
Any insights or ideas would be tremendously appreciated.
MacBook Air 13” Mid 2011
High Sierra 10.13.6.