820-00165 no PM_SLP_S5_L pulls 0.06A

[2informaticos]

"PCH_INTRUDER_L - 0.02V"
Check U1900 output, PPVRTC_G3H voltage.

 

[it-solve]

PPVRTC_G3H - 0.11V at the output pin1
PP3V42_g3H - 3.4V
PP3v3S5 - 3.3V
PP3v3_TBTLC - 0.1V
PP3V3_S5RS3RS0_SYSCLKGEN - 3.3V

 

[2informaticos]

"PPVRTC_G3H - 0.11V at the output pin1"
Check diode mode to ground; inspect filter caps.

 

[it-solve]

Short on PPVRTC_G3H, removed caps in the line including U1900, still short. Seems to be coming from the CPU.

Dead CPU? Can I inject 2.5V to confirm?

 

[2informaticos]

You can inject voltage, nothing to lose...

 

[it-solve]

I assume this is what a dead CPU core looks like?

 

[2informaticos]

Not the core; RTC is embedded into PCH.
However, PCH/CPU built on same package.

Just in case, add quality flux and heat that area.
There is a low chance of short caused by underneath corrosion.

 

[it-solve]

Preheated it with a hot air gun, no luck - same heat spot.
I can try to reflow like a GPU but seems internal short.

 

[2informaticos]

If the hot flux didn't help, bad PCH...