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ProAmp Viper 60 standby no working

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  • ProAmp Viper 60 standby no working

    Hello everyone,

    long time no post!

    As the title suggests there is a problem with the standby on this amp has gone kaput. I restored the amp a couple years back and not used it as great deal. After maybe four or five months of sitting unused, it popped loudly when I switched the power on. On inspection the standby switch was in “off” position, so switching on power ought not have caused a pop.

    The standby now does nothing, however it is switched. I am not going to have time to deal with it for a week or so, but I wanted to check my logic. The power on light is illuminating. All I can think is that the switch has failed.

    my bet is that I may have replaced the original, or maybe taken the original off, cleaned it and replaced it badly. Either way, it is odd that this has happened out of the blue.

    la plus ca change, La plus c’est la meme chose.

    best wishes

    steve

    p.s. Why isn’t the first letter of a line capitalising?.

    schematic here:

    https://music-electronics-forum.com/...ge-6l6gc-query

  • #2
    That is only a partial schematic and seems to show the HI/LOW power switch. Where is the standby switch? Can you post the complete schematic?
    Originally posted by Enzo
    I have a sign in my shop that says, "Never think up reasons not to check something."


    Comment


    • #3
      Is this better?
      Attached Files

      Comment


      • #4
        The schematic shows a HT switch that toggles between high and low AC for full and reduced power. Does this switch have a middle position for standby?
        Otherwise B+ will be always on.
        Does the amp work?
        - Own Opinions Only -

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