820-01958 5V only

[prodigy83]

My reference only: REF1132

No history on board other than no power when it came in.
5v on meter, no amps drawing.
I replaced U7000 twice, PPBUS_G3H is flucuating between 1.2v, drops to .933v, then back to 1.2v, and it repeats this consistently.

 

[2informaticos]

Check diode mode to ground on PPBUS_G3H and all big coils; don't forget L9060.
Compare readings with good board, or refference table.

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