820 00165, don't turn ON

[Noguinfor]

Hello,

This motherboard came with a little corrosion close to u7501, properly c7537, r7521, c7536.

But i think that corrosion it's not the main problem.

I found F7140 opened, and i noticed PPBUS it's shorted! when i apply 1V on PPB?S the PCH get's real hot more than usualy. I noticed to, when i apply 1-2 volts on PPBUS the PP1V05_s0_PCH have 1.05V.

Rip processor?

thanks

 

[2informaticos]

NEVER EVER inject voltage on PPBUS_G3H before searching for shorted high-side MOSFETs!!!

Compare resistance to ground on PPBUS_G3H with all big coils.
In your case, looks like Q7630 is the culprit.
Remove it and check again diode mode values.
L7630 should have more than 0.100 I supose.