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dcoffset

  1. X

    Marantz 2500 UBER HIGH negative dc voltage -14.90 VOLTS ! Help

    I’m working on a Restoration for a Marantz 2500 and I’m basically at the finish line just finalizing calibrations. It came to my surprise that both channels show a very odd -14.9 V, YES volts not millivolts when going to set dc voltage. The unit plays and sounds incredible, but this worries me...
    • xalara76
    • Thread
    • dcoffset marantz marantz2385 marantz2500 marantz2600 marantzdcoffset
    • Replies: 5
    • Forum: Marantz Audio
  2. J

    Pioneer SX-590 DC Offset

    Hi all, I have recently acquired a SX-590 receiver which I would like to restore and put back to use. The unit lights up and the VU meters move etc but I have a very high DC offset of around 28.2VDC. I have checked through the boards for dry solder joints etc. I have also replaced the suspect...
  3. Devileyes

    Am I checking the Bias right? Sansui 990

    My 990 has been running hot since I bought it a few months ago. It’s been recapped and had the trim pots replaced by the dude who I bought it from. Anyway I checked the DC offset first, using the SM and the sticky thread. RC was 37.0 and LC was 8.9. I adjusted those both down to as close to 0...
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