820-02098 5V

[No-Clean]

Board had very very little corrosion around C7700 cleaned and replaced components from donor.

Port meter 5V ~0.045aA

PPBUS_AON - 12.3V
PP3v8_AON - 3.8V
PP5v_S2_MAIN - Pulses ~0v - ~1v
PP3v3_S2 - Pulsing

RC283 and RC282 heat up under thermal camera.

 

[2informaticos]

Check diode mode to ground on all secondary power rails; compare with good board, or reference table.
Start with LC260.

 

[No-Clean]

Checked all coils for abnormal values all are ok, checked the entire board for shorts and nothing.