Very clean board no apparent liquid damage, the trackpad does not move the cursor but it does register the clicks.
Tried a new pad and cable no change, there were some crumbs magically around the SMC so I reflowed and ultrasonic'ed, no change.
Not really sure what lines control the pad movement.
Fails detect trackpad in ASD 162
R4808 - 3.33v
L4807 - 5.14v
U4801 Pin 24 - up and down 1.6 to 3.33, which Im guessing isn't right?
So is it likely the U4801 (looks clean on surface) needs to replaced or the SMC needs to be replaced/reballed? anything else to look at?
Tried a new pad and cable no change, there were some crumbs magically around the SMC so I reflowed and ultrasonic'ed, no change.
Not really sure what lines control the pad movement.
Fails detect trackpad in ASD 162
R4808 - 3.33v
L4807 - 5.14v
U4801 Pin 24 - up and down 1.6 to 3.33, which Im guessing isn't right?
So is it likely the U4801 (looks clean on surface) needs to replaced or the SMC needs to be replaced/reballed? anything else to look at?