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  1. Sturdag Lagernathy

    Quick Schematic Flow Question...

    C7 and C8 connect to Q2's emitter, not the base. (Row N)
  2. Sturdag Lagernathy

    Fake JRC4558D's

    What a shitshow!💩
  3. Sturdag Lagernathy

    Proco Rat 2 - Weak volume! - Solved

    From the pics, its probably less than 20 yrs old. (Dammit :oops: ) it should have plenty of volume. Edit: I see from the pcb it's a RAT 3 Rev. B..
  4. Sturdag Lagernathy

    Proco Rat 2 - Weak volume! - Solved

    Can you get some resistance readings on the pots,( mainly just a continuity measurement, but if the resistance is odd speak up) [back in the day a fat slob slamdancing on my pedalboard comes to mind]) maybe a bad pot. Check continuity on that FS as well, it's been eyeing me funny. If not either...
  5. Sturdag Lagernathy

    PPCB Starboard Fuzz to Third Man Hardware Fuzz-A-Tron Mod

    No power filtering? In a Fuzzrite? "F-you, use a battery!" Gold pins are the MOJO
  6. Sturdag Lagernathy

    Can I make the Fordoble "Grit" switch do something (anything)?

    You need leaky diodes. Still, it can be very subtle. It's not a "distortion" per se, it's more of a "crispiness" in the mid- high end. Play the boost clean for most apparent results. Very low voltage Zeners can mimic germanium, but IMO, germ sounds best..
  7. Sturdag Lagernathy

    Proco Rat 2 - Weak volume! - Solved

    Ok back to it! Those voltages look good at a cursory glance, and Guilherme is right, JFET next! Flat side facing you, left to right, pins 1,2,3 voltages please. Is it a 2n5458? Edit: just realized we're in general. We should probably move this to troubleshooting..
  8. Sturdag Lagernathy

    The Week on the Breadboard: The Emperor of Tone

    I put a 9/18 volts switch in mine, and I much prefer 9 volts. Guess I just like it a little dirty.. So I'd say pull the charge pump out completely. If you must have a charge pump, I say go with dual +9v/-9v rails!
  9. Sturdag Lagernathy

    Proco Rat 2 - Weak volume! - Solved

    In 30 years, I've repaired maybe 10 odd RAT 2 pedals, probably 7 of those had a faulty op amp. Seems all would be OP07. The boards are fairly robust, but I do remember one had some liquid damage, and was de- laminating. Wires are very cheap feeling, but adequate. Your experience can vary, but...
  10. Sturdag Lagernathy

    Proco Rat 2 - Weak volume! - Solved

    Is that an original footswitch? IME, a RAT usually fails op amp first, at least if it has a few years on it. We would need voltages.
  11. Sturdag Lagernathy

    Has anyone built the Death by Audio Synthesizer album?

    I can't get a clear download; got a better Pic? Or is it too soon?:unsure:
  12. Sturdag Lagernathy

    Dirt Dauber Not Working (2nd Build)

    May be the viewing angle in the pic, but is the input jack "tip" lug touching the power jack nut? Would the "out" jack tip contact the power jack ground lug if a plug was inserted?
  13. Sturdag Lagernathy

    Pedal board Output Buffer ?

    It's straight out of the datasheets. Can't remember which one, but it's not a proprietary thing..
  14. Sturdag Lagernathy

    War Scythe : settings suggestions and circuit explanations.

    The schematic suggests the order is: Ringer > Bender > Muff. A cursory glance at the circuit traces seems to agree.
  15. Sturdag Lagernathy

    Non-inverting op amp buffer with gain control

    College? Night school? Barring those 2, it just takes time, soak up everything you can!! Oh, and learn to love math!
  16. Sturdag Lagernathy

    Opamps for Dummies - part 5

    Yes! Thank you! Can't wait for pt. 6! 💋🤌
  17. Sturdag Lagernathy

    D9D Diode Forward Voltages

    Your diodes are probably fine. Leakage is part of the "mojo" of germanium diodes, and can mess with your measurements. As long as they conduct one direction and not in the other, they're (y)...
  18. Sturdag Lagernathy

    Three Skeptical Buffers, three switches popping

    Are you using the same type LEDs in them all? Pull one leg of the LED and see if it changes the pop..
  19. Sturdag Lagernathy

    This is my freaky take on a Rat

    What drove the choice to use the LM358?
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