[SOLVED]820-3115-b , quarter fan spin, charger light flickering

[Don Anton]

Hi, I have 820-3115 water damaged board , flickering charger light (like pulsing) and fan spins every few seconds.

I check U7000 area and pretty nice and clean .
PPBUS_G3H- 12.6v, PP3V$@_G3H-3.4v. I replaced both battery and charger current sensing resistors, no change. then I repalced U7000 but still the same.

If anyone can help me to sort this greatly appriciate.

Thank you

 

[smiba]

If the charging light goes off there might be a short somewhere, check resistance to ground on S0 lines.

Is P3V42_G3H stable?

 

[Don Anton]

Hi smiba , thank you for your replay. Found short in S0 line and replace the shorted resister. all good works fine now. thank you for your tip. spot on.