820-01521 A1932

[Outofwhack]

Liquid damage declared but logic board is immaculate.
Trackpad circuitboard badly corroded. Trackpad replaced, trackpad flex cable replaced.
Some keys dont work, some keys return the wrong character.
A replacement A1932 keyboard produces exact same result although an external keyboard works fine.
What would be the next step?

 

[2informaticos]

Keyboard information is encoded into trackpad circuitry.
J6700 can't cause this issue.
Should be a problem with keyboard itself, or its connection to trackpad board.

 

[Outofwhack]

Thank you! That will teach me never to purchase second hand trackpads. I just took out a corroded one to replace with a faulty one.