820-3462 no trackpad

[Kyle93]

This has no trackpad or keyboard. Observed PP3V3_TPAD_CONN is only 1v. Tried different cable and trackpad but no change.

What should be checked next?

 

[2informaticos]

With trackpad flex disconnected?
Possibly bad R5708...

 

[Kyle93]

With or without trackpad flex connected PP3V3_TPAD_CONN is only 1v

R5708 is good

 

[2informaticos]

Check Q7800 voltages.

 

[Kyle93]

solved after replacing q7800