820-02020 water damage

[bartech]

water damage but someone before me try to repair. there was short on c7800 on line pp5v_bstlq_vout_spmu. change it and now on aon i got 3,8v i feel that touchpad is working but cant get to dfu and dont start. dfu blaster dont see it too.

 

[2informaticos]

What about M/SPMU LDOs?

 

[bartech]

problem is whit charging, i leave him for night and it charge a little and start, i get even to recovery but cant instal system because its not charge , i saw that if i will switch off computer will charge when switch off but very slow. When use dfu blaster when i push dfu computer restart but i get informaton that wrong usb c is connected. is it possible that u7700 make some problem whit it? there was water damage near i can reball it if it could make problems.

 

[2informaticos]

If no data needed, did you try DFU restore?

 

[bartech]

did dfu restore and still the same whit charging, when its close it charge but very very slow. and when it work no charging.

 

[2informaticos]

Did you test with known good battery?

Check resistance (ohm scale) over C5220/60.

 

[bartech]

new battery / old - same
c5220 - 2,6 ohm
c5260 - 3,2 ohm

 

[2informaticos]

Machine works with charger alone?
Also test with battery alone.

 

[bartech]

work on charger whit battery
on batery no charging - working
on charger, battery disconected - not switching on

 

[2informaticos]

Then your problem is in USB-C area.
It should boot with charger alone.