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trimmer adjustment

  1. grindfix

    Marantz 2225 DC offset issue

    Hello everyone. I'm trying to adjust DC offset and R711 trimmer is maxed out at -0.080 VDC (negative) between pin 723 and 722 (ground). Opposite channel is adjusted to 0.0VDC no problem. Bias adjustment was difficult due to error in the schematics but is good now (0.020VDC) on both channels. Can...
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