a1708 820-00875-a 20v 03-04amps

borg

New member
hello my problem is pp3v3_s5 short when check in diode mode.
and ppv5_s5 upon voltage check no output voltage.

maybe cpu prob or maybe not the cpu..

thanks advice me...
 

2informaticos

Administrator
Staff member
First of all, welcome to the forum!

Short to ground on L7690, will block U7650.
Best way to find the culprit is voltage injection.
Start with 1V and slowly increase (only if needed), no more than 4V.
First, set the amp limit of lab PSU to max.
 

borg

New member
upon checking

pp3v3_s5 inject all temp cpu
 

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