820-3481-A No power

[2click]

This board has a problem on PP3v42_g3h, when D1900 in place PP342_g3h = 2,2v if I remove D1900 it goes high at 3,42 checked all the resistors involved and their values are OK, the only other thing on that line is U1100 is it worth to do something else?

Im using 820-3478 board view and schematics to try to figure it out.

 

[2informaticos]

Post diode mode at 3V3_G3_RTC.
Inspect C1531/32/33 for corrosion.

 

[2click]

PP3V3_G3 = .549
no corrosion on the capacitors...

 

[2informaticos]

Just in case, heat PCH with quality flux.
May have luck to be an issue caused by accumulated crap underneath.

 

[2click]

No luck with the heating of PCH...