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    A BASIC QUESTION

    I'm debugging a Derailer and I must be missing something obvious. Since the board and layout diagram identify parts by value how does one find a specific part on the board when there are multiples of a single value. I think I have an good idea due to proximity to other parts but I can't be...
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    Double Muffin, Again

    I'm using the Muffin Fuzz build doc as people suggested. But C12 is listed as 100nf but the PCB shows it as an electrolytic which I assume is not 100nf. Which is it? I just looked at again, and it looks like all 100nf caps in the doc are shown on the board as electrolytics. Why not just...
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    IC Sockets

    Over the last few months I discovered that these types of sockets: Can be a problem. The ICs need to be inserted with considerable force to make sure the IC is making good contact on all pins. Upon reseating parts on pcbs I was ready to abandon they started working. Originally they appear to...
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    Overcast Fuzz

    Just built it today and had some questions. There is a bias pot and I wondered if biasing needs to be done or is it for something else? It works but seems to be just another distortion/fuzz pedal. I need some more time with it before I decide if its worth boxing. Also, what are the chances...
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    Ferrite Beads?

    I have a Dead End FX Inchdown Redux to build and it calls for ferrite beads but specifies no values. There are 2 of them in the power section of the pedal. Any clues as to what to buy? Thanks
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    Muff Build Docs

    Any word when some of the "coming soon" build docs for these builds will be released? From another post the Muffinator has been coming soon since July of last year.
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    SOLVED Voltage Supply Question

    I'm reposting this after some further work. R44 below has voltage (9V) to it's left but none on the right leading to IC4. The value is correct and I even replaced it yesterday just in case. The network of connections goes to each IC on the board. Obviously no IC gets power. There is power...
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    Big Muff 2 Build

    After receiving the PCB yesterday I populated and have mixed feelings so far. It seems a bit muffled overall with a muddy low end regardless of the tone and sustain settings. It tightens up if I run the signal through a graphic eq with the 2000-3500 Hz freqs boosted a little but then it sounds...
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    Voltage Supply Question

    Based on this schematic snippet what should be the voltage at pin 3 on IC4? I get the correct voltages at the LEDs but zero it pin 3. Thanks
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    Dead Astronaut Skyscape Chorus - No Wet Signal- UPDATE

    Got back to this after a couple months. There is no wet signal coming through. All ICs have voltage. Part of my problem is not knowing exactly how this circuit works. I traced an audio signal to the cathode of D3 then no signal into R12 which feeds directly to the input of the MN3007. I've...
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    SOLVED Five Cats "You're Twistin My Melon Man" Issues

    I went back to it today and examined the solder side of the board. I finally found 2 unsoldered pins and a capacitor with bridged leads. I also re-inserted pin 7 in U3. Works very well and one of the most bizarre things I've ever heard. I need to keep in mind to always go back and check the...
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    A very strange thing

    I just finished building the Five Cats "You're Twistin My Melon Man". With all parts installed there is no output. The sound stops beyond pin1 on U3, the CD40106 Hex Inverter. When I started to lift U3 out with it powered on the sound cam back on and works fine. All switches and pots have...
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    Diode Question

    I finished building the Dead Astronaut FX Skyscape Chorus - and there is no chorus sound. Dry signal is OK, no wet signal. The volume control works. I need clarification on the schematic. I attached the full one and a snippet where the problem lives. Before I post pedal photos and the like...
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    Dead End FX Petty Tears

    I got this thing built and it works somewhat they way it's supposed to. I'm getting some sound cutouts based on some switch positions and some whistling. I've re-flowed solder for all the switches. The rotary switch causes some cut-outs depending on where it's set. Before I post photos and...
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    Type G potentiometer

    I ordered a PCB that uses a type G pot. What can I substitute for it? The one graph I’ve seen, it tracks closely to a B type. Thanks
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    SOLVED Symmetric Clipping Diodes Question

    What might cause a major signal drop after passing through (left to right) the diodes shown. Bad diodes, wrong orientation? Or should there actually be a major signal drop? There is continuity between the diodes and the resistors. I'm really just looking for theoretical possibilities as I...
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    Dead End FX Engineers Thumb

    Got this built but when engaged, I'm getting a periodic click once the Ratio control is turned above zero. It does not appear to do anything to the guitar signal. I am unfamiliar with the LM13700 IC. There are several questions beside the original: 1. Which lead should go ito the square pad...
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    Magnetron Drill Template

    It appears the drill template does not match the pot and LED orientations. The LEDs holes in the enclosure are off the board. You can't just drop them down from board and through the drilled hole. You have to solder them in and bend them toward the hole. Did I miss something?
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    Cannon Fodder MKII Build Doc

    Any idea when the build doc and drill template might be posted on the page for the PCB?
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    SOLVED AION Ceres losing volume (missing part)

    I built the Ceres and although it outputs sound and seems to sound like it should, the volume is half of the unmodified signal. I traced the. Signal and it appears the signal drops in strength around Q4 or Q5. (I attached the build .pdf file with schematic). I have been working through...
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