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Super Sonic 22 foot switch pop

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  • Super Sonic 22 foot switch pop

    As you switch between Vintage & Burn there is a loud pop. The other switches are quiet. The amp looks like new...

  • #2
    Is it K2 or K7 with a leak issue I wonder.
    I would check C9, 10, 20 and 21 for leak or their ground leak resistors.
    Support for Fender, Laney, Marshall, Mesa, VOX and many more. https://jonsnell.co.uk
    If you can't fix it, I probably can.

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    • #3
      Schematic please?
      Education is what you're left with after you have forgotten what you have learned.

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      • #4
        Here is the service manual.
        Attached Files
        Support for Fender, Laney, Marshall, Mesa, VOX and many more. https://jonsnell.co.uk
        If you can't fix it, I probably can.

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        • #5
          Something else to check is the mute FET Q1. It operates momentarily when switching between vintage and burn.
          Experience is something you get, just after you really needed it.

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          • #6
            Originally posted by nickb View Post
            Something else to check is the mute FET Q1. It operates momentarily when switching between vintage and burn.
            And sometimes they get clipped out as a quick fix with the intent to 'replace later if there's a popping issue'.
            Originally posted by Enzo
            I have a sign in my shop that says, "Never think up reasons not to check something."


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