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pm550dc

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    Marantz PM550DC idle current adjustment help

    Hello, I hope someone could answer my question. I have a Marantz PM550dc amp, reading the service manual on how to adjust the idle current it says to check the voltage at TP1 and at TP2 and I am not sure if I am checking correctly as the manual isn't very clear where to place the meter leads...
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    Marantz PM550 DC - Restoration advice desperately needed on "where to next"?

    Hi team So I posted a few months back when I found this great looking Marantz amp online https://audiokarma.org/forums/index.php?threads/marantz-pm-550dc-sound-output-distortion.985180/ From that thread I had posted... "The main issue is the sound output. At a low volume there is a distortion...
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