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Home Forums troubleshooting Quadra 800, no power up — #4 troubleshooting Quadra 800, no power up — #4
Post #4 by Elfen
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Leaky caps and a bad Signal Diode in the PSU. Can you do a jump start with a battery like on the Mac IIs? You need to set up the + battery wire on the PSU output and then touch ground.

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