hey! did you guys find any solution to this issue? im also experiencing it on a macbook air. i was going to get a keyboard replacement, but i don't want to change it only to find out afterwards the problem appears again!
this macbook is running both el capitan and windows 7 using bootcamp, and the problem appear in both OS, so that made me think of a keyboard issue. how could i discard any logic board issues? any ideas?