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Recent content by tjfel

  1. T

    512K repair - power supply issues

    Hi all, I'm trying to get a 512k (intl analog board) up and running again, and I think I've tracked the problem down to the power supply. The initial presentation was a dead mac (no video or chime, no HT as far as I could tell) with a rapid clicking/chirping when power was applied. I measured...
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