[SOLVED]820-2610 - Won't turn on

[pws6074]

Guys,

I know this board is old, but i need to fix!
The costumer said, after start gets gray screen and another day the computer just don't turn on anymore.


I get:
PPBUS_G3H (schematics is 6v but i get 8.2v)
PPBUS_CPU_IMVP_ISNS
PPDCIN_G3H
PP3V42_G3H

SMC_RESET_L - 3.4v


I don't get:
PP5V_S3


Short to ground on:
PPVCORE_S0_CPU - 4Ω ( i guess have something wrong there)

Hint?


Thank you

 

[SMMRepair]

Do you have green light? Are PPBUS_G3H and PP3V42_G3H present and stable? If so, replace C7771 with poly-film cap from 2936/3115 board. You'll need to squeeze it in there, but it will fit.

Pretty common issue on these boards.

 

[dukefawks]

The usual, dead C7771. Check voltage on C7771, I bet it is 0.3V.

 

[pws6074]

Yes, you are right.
I replaced and works!

Thank you