820-3115 No CPU Vcore

nik1981

Member
I have an 820-3115 liquid damage around SMC. Originally no magsafe light. Removed and reballed SMC, now I get magsafe and fan spin with the fan at full speed after 5 seconds.
CPU has a little heat in it after a min or so.

ALL_SYS_PWRGD = 3.29v
PPVCORE_S0_CPU = 0.00v

I'm stuck with this one, please help
 

2informaticos

Administrator
Staff member
I bet for some resistors or traces affected for corrosion.
Check all SPI Bus Series Termination resistors and their traces.
 

nik1981

Member
All SPI Bus series termination resistors test as schematic. Traces look good, not sure what to check next.

I have PP3v3_SUS
 

nik1981

Member
I've checked all resistors around the SMC including the other side. Took ages but it seems they are all okay. Is there any way to narrow it down?
 
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