820-3115-b no PP5V_S3

hi, i have a 820-3115-b which is not turning, but there is green light in charger.
i have measured following voltages:
ppbus_g3h is around 12.43v
PPVRTC_G3H is 3.3v
smc_on_l is 3.3v
but pp5v_s3 is missing.
i have tried changing u7200 but it didn't fixed it, also the pch is getting hot when magsafe is connected to it.
board have no history of liquid damage.
 

2informaticos

Administrator
Staff member
PCH has no reason to get hot in S5 state, when is powered only from 3V3_S5, 3V3_SUS and VCCRTC...
Sometime RTC block fails and sink to much current.
Your PCH is dead...
 

2informaticos

Administrator
Staff member
For the price of a new PCH, I don't recommend to bother you reballing old one.
New PCH also requires clean ME region...
 
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