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marantz 4400 Power board p800

catrafter said:
Normally the chassis is what you would use for a reference but with J813 disconnected, there is no connection from the circuitry to the chassis. Use J812 as the reference for your meter and see if you have DC voltages now.

Tom
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Is there any other reference point you can use besides J812. My J812 is blank with nothing attached to it. There is a small ground wire next to it though. Any thoughts?
 
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