MacBook Pro 13" A1502 820-4924 keyboard responding slow

ielectron

Member
We got MacBook Pro Keyboard was not responding and trackpad in first place. I replace trackpad cable and trackpad working now fine but keyboard is not, keys need to be pressed 3-4 times to get one symbol. already tried new trackpad other trackpad cable, new keyboards and battery didn't help. also I tried fresh osx same didn't resolve issue.Any ideas what should we check ? Thanks for any help.
 

2informaticos

Administrator
Staff member
Access boot menu and check if left/right arrows move correct there.

Check for corrosion around U4820/30.
Be sure R4822/23 are good.
 
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