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easy wiring mods for PC1

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  • #16
    Someone call?
    Looks like a Rev B board in the pics above. I can see the jumper wire on the transformer.
    Dialing in the pots on the sustainer board can help a bit to, so can changing the cap on the tone side.
    Remember, the older PC1's like yours did not have a tone knob. Just its mere presence will have an impact on the tone.
    This would explain some of the tonal variations from older vs newer models.

    As for adjusting the pots, use that as a last resort. Screw it up and you will either kill your batteries or create really nasty feedback, not the good kind.
    If you do want to experiment, take a sharpie and mark the position of the center pot (not the one closer to the edge of the board. Leave that one alone).
    Make small adjustments either way to see if you can sweeten up the tone a bit. Just remember your reference point and don't go more than 1/4 turn either way. You'll knock it out of phase with the driver.
    Ask Viktor what happens when a board is out of phase. Sounds like utter shit.
    Also, make sure you use a non-conductive screw driver since you have to make these adjustments while the unit is on.
    Short it out and you'll be on the hunt for a new board, or looking for someone who knows how to fix them.

    I suspect the issue with your Chameleon is the tone pot. Bypass it. It should sound just like your others at that point.
    Last edited by rjohnstone; 02-01-2014, 09:52 PM.
    -Rick

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    • #17
      Thanks! Will try bypass tone pot.
      Proud endorser of:
      Steve Clayton Inc. http://www.steveclayton.com
      GLS Audio http://www.glsaudio.com
      Orange County Speaker http://www.speakerrepair.com/

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      • #18
        I took the tone pot out of my natural and it defiantly opened up the tone of the guitar for the better. Wish the would go back to the non tone design

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        • #19
          I knew that Rick would chime in and give great advice! Thanks Rick!

          We should change your username to Doctor PC1 MD or something like that! LOL!

          Always cool to get a better understanding of those boards, and why many of mine happen to sizzle and die! LOL!

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