820-00163 green light no power

opsudhead

New member
Hi guys this time I have a 820-00163 board with no water damage or corrosion, checking all rails I found a 3v3_S0 pulsing with oscilloscope, which means I possibly have a short on S0. in the schematic I only see a few mentioned where I should start
 

2informaticos

Administrator
Staff member
Probably more power rails pulsing.
Should find the one which not and check for short there.

Steady 3V3_S5/SUS?
Try to start in SMC bypass mode.
 

piernov

Moderator
Staff member
Could work the same as 3332 since they have the same eDP muxing circuit (and same GPU VCore regulator to disable GPU power).
 
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