820-3209 PP3v3_S4 0v

[No-Clean]

Board had minor corrosion, its clean now and no components were loose or disconnected near corroded arear.

Went thru the list of rails and there are no shorts

ppbus 8.4v
pp5v_s5 5v
PP3V3_S5 3.3v
PP3V3_S4 starts at around 1v then quickly starts to drop down to 0v
ALL_SYS_PWRGD 0v

 

[2informaticos]

3V3_SUS present?
Post all PCH's RTC signals.
Where was the corrosion located?