Recent content by jrbell1990

  1. J

    Electrovibe Audio Issue

    Another dilemma. I built up a new board because the other was garbage. Current issues include no effect audio (bypass is fine) and no lamp. Does anyone have measurements from the test points they can share? I am getting some current through the Lamp but it does not light. I can share...
  2. J

    Electrovibe Audio Issue

    Hi all, Built up an Electrovibe for my father in law. Sounds great but there's an issue when re-engaging the effect that I can't quite solve as of yet. I can email a video of my issues to anyone interested as the minute-long video won't post to Imgur or here. First and most importantly, the...
  3. J

    SOLVED Integral Preamp Debug

    I'm running a TL072 where a TL071 should be. 🤡
  4. J

    SOLVED Integral Preamp Debug

    Yeah, I couldn't spot anywhere off the charge pump with double digits... I've run a battery that read 8.76V and a 1-Spot wall wart direct.
  5. J

    SOLVED Integral Preamp Debug

    R4 to R103 .92V 6.83V reaches R103 I'm getting 1.22V at the junction of the series resistors at R4 and R103 Hopefully I have something in there that's helpful.
  6. J

    SOLVED Integral Preamp Debug

    Frilly Bits
  7. J

    SOLVED Integral Preamp Debug

    Greetings all, I am having trouble finding the source of my issue on this Integral Preamp and was hoping for some insight (maybe from someone who's built this as well??). Solder-Side Audio is at about half and sounds like a zipper powered by battery and 9V supply. Q1 seems to be playing a...
  8. J

    Electrovibe

    Piggybacking here, but I am wondering if I can substitute L78L05 (5V output) for the L78L12 (12V).
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