820-00165 PM_DSW_PWRGD "chicken or the egg"

[KC Micro Tronix]

I have a 820-00165 that is just sitting there 0.025A Not enabling 3v3 SUS and turning on the BIOS.

I noticed that PM_DSW_PWRGD is not present at R1451.
This is generated by the SMC. Isn't this required to enable 3V3_SUS?

Tried forcing it with a 10k and 1k resistor but it gets pulled down.
40 k ohm resistance to ground

 

[2informaticos]

S5_PWRGD must go high first.

 

[KC Micro Tronix]

R8141 was high resistance.

You sir are a
steely-eyed missile man

I have never troubleshot this area. There was water damage around U7501 however a physical poke and scrape check of R8141 appeared that the resistor was good so I moved on. Just goes to show you never know!