820-2936 no trackpad

[Kyle93]

820-2936 had minor water damage. Replaced U7200, J5800, and U4510. Turns on and recognizes keyboard and clicking works on trackpad but trackpad itself does not track. Tried known good track pad and cable

18V on R5806

What to try next? Can U5701 still be to blame even though clicking and keyboard work?

 

[Kyle93]

Changing U5701 solved the issue