820-3330-B

[Quickfix]

looking some help, this board wont turn on with track pad connected, without track pad working fine. tried good track pad and flex same.
where should i start troubleshooting?

 

[2informaticos]

First of all, welcome to the forum!

Check diode mode to ground on pins 21/22 of J5800, with trackpad connected.
Find some components connected to the same lines, not directly on the connector pins.
Do not apply power to the board, of course...

 

[Quickfix]

pin 21- 566, 22-366

 

[2informaticos]

Try to start removing R5805.

 

[Quickfix]

its turning on no trackpad

 

[2informaticos]

I'm not sure if I correctly understood you.
Do you mean it turns on with trackpad connected, but R5805 removed?

 

[Quickfix]

yest track pad connected but R5805 removed

 

[2informaticos]

Chcek D5802.
If good, change U5805.
If still bad, change L5801.

Resolder R5805 first...

 

[Quickfix]

thank you i will try that tomorrow and update you...