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Marshall JVM410C, messed up channel levels

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  • Marshall JVM410C, messed up channel levels

    Of all channels only in clean, output level escalates upwards through green-orange-red modes. In all remaining channels, modes have their levels mixed up without any relevance.
    Any suggestions?

  • #2
    try doing a master reset

    Hold Clean Mode + Turn ON Power >> Channel LEDs glow red
    confirm by pressing Crunch Mode

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    • #3
      Thank you for your answer. Reset didn't help, replacement of main board though, cured all issues!!!

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      • #4
        This is a sad state of affairs.
        Repairing an amp by replacing a board.
        Cute trick amps with DSP chips, microcontrollers to change the display.
        It is nice that the manufacturers can add bells & whistles.
        I would like to see less of this stuff.

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