Hi Jeff. I feel your pain. And FYI, the power supply is a pain to work on. The PCB is held by a number of plastic stand-off type things that you have to squeeze closed and work the board out. But if you go this route, Q1 is a likely suspect.
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I have attached the schematic of the power supply, at least this is what I have seen in the 8920's I've worked on.
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Good luck!
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Mark
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