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  1. debrad

    Abyss With No Clean Signal - SOLVED

    Reassuring to see that my troubleshooting skills continue to improve. I saw the evidence leading me towards an issue at Pin07 of the TL072 and whatever controls the voltage at that point but still wasn't 100% sure about the true cause so... I asked for some help on the Facebook Pedal Builder's...
  2. debrad

    Abyss With No Clean Signal - SOLVED

    I got a chance to do some audio probing this morning... There is a nice clean signal all the way to Pin01 of the TL074 where a bit of distortion is noticeable. There is also a tiny bit of distortion noticeable on the side of R10 connected to Pin01 and then a little more on the side of R9 that...
  3. debrad

    Abyss With No Clean Signal - SOLVED

    Hi everyone! I have an Abyss build that seems to function in every way EXCEPT the signal is incredibly clipped/distorted. The board came to me with no functionality and I got it this far by rotating the TL074 into the correct orientation, replacing a 1M resistor at R14 with the correct 100k...
  4. debrad

    Questions for Cataclysm Tap Tempo Mod

    I've had a few other projects come up that have taken priority over my modified delay so I haven't done this yet. Now that my daughters kindly bought me a couple of breadboards for Christmas, I should be able to test the two options quite easily as recommended by @Danbieranowski above.
  5. debrad

    Fuzzy Foxx Trouble

    It was R6...
  6. debrad

    Fuzzy Foxx Trouble

    Thanks Chas. Just before giving up on this one for the night, I tried to use my iron to remove what I thought was a blob of solder from the leg of one resistor and it turned out that resistor had a broken lead! I swapped in a resistor and now all my voltages align pretty nicely with the...
  7. debrad

    Fuzzy Foxx Trouble

    I'll try to get some photos. As Nostradoomus says, Q1 and Q2 look pretty messed up but it appears Q3 and Q4 aren't too bad. I installed sockets for the transistors so I just stuck some 2N5088s in to see if everything worked...no dice! I also swapped the four of them around to see if that...
  8. debrad

    Fuzzy Foxx Trouble

    Hi folks! Troubleshooting my build...I've got very little output and it's clean (not distorted at all). I've noticed that D2 and D3 are "shorted" (i.e. same voltage measured in same direction) but I'm not sure if that's an issue in this circuit. I have also measured the following voltages so...
  9. debrad

    Choosing Between Q1 Transistors For The Bayonet Fuzz

    I figured I would add a couple of photos to make this more appropriate for the "build report" title. My apologies if I posted my transistor question in the wrong forum (although I am still curious about your Q1 opinions for this Bayonet Fuzz!).
  10. debrad

    Choosing Between Q1 Transistors For The Bayonet Fuzz

    Hi everyone! I just completed my Bayonet Fuzz (Musket Fuzz) build and I'm VERY happy with the way it turned out (thanks @PedalPCB !). Knowing that Q1 drives the "LPB-1" pre section of the circuit, I used a socket in that position and tried a few different options including a 490 hfe 2N5089 (I...
  11. debrad

    Bias Trimmer and Tone Knobs for Uberfuzz

    Looks like I have a pretty good plan of attack for this modified Super Fuzz. My only remaining question is about that trimmer around Q4 and Q5. Is there any particular reason why @PedalPCB would have opted to leave it out (from what I understand, the trimmer is just there to fine tune the bias...
  12. debrad

    Bias Trimmer and Tone Knobs for Uberfuzz

    Thanks @Jovi Bon Kenobi, I did start to look at the Boss/Behringer forms of the Super Fuzz but thought I read there were some notable differences and I got the sense it would take a number of mods to convert the Boss Hyper Fuzz into a Univox Super Fuzz (I just dug back through my browser history...
  13. debrad

    Bias Trimmer and Tone Knobs for Uberfuzz

    Hello again PedalPCB Forum members! A friend has asked me to build him something SIMILAR to the Danelectro "Eisenhower Fuzz" which, based on my internet browsing, appears to be a Univox "Super Fuzz" (or PedalPCB "Uberfuzz") with additional controls for "Bass" and "Treble". I've looked into a...
  14. debrad

    FET Reassurance for COVERT Build

    I had a few MPF4393 alternatives lined up (including 2N5457s, MPF102s, and J201s) but Catalinbread seems pretty adamant that the circuit needs the right component so I just went with the SMD version. Despite my panicked post above, it wasn't that hard to solder them in. I also managed to...
  15. debrad

    FET Reassurance for COVERT Build

    Thanks Chuck. Everything else seems to function properly and it's not a setting I can see myself using so I'm not too worried about it but I suppose it could be a sign of other issues. At this point I'm suspecting the potentiometer itself but maybe I should investigate a little further...
  16. debrad

    FET Reassurance for COVERT Build

    Thanks everyone! I haven't had a chance to try the Covert at +18v but I will have to do that. Something interesting that I discovered last night: With the bass and treble on "0" and the middle on "max", there is no output from the pedal...I get sound as soon as I reduce the middle or if I...
  17. debrad

    FET Reassurance for COVERT Build

    Just to close the loop on this one: finally boxed up my completed Covert Overdrive build and I think it might take the top spot in my collection of "Marshall-In-A-Box" pedals. As I mentioned, I opted for 22n in the C18 position (and modified R3 and R10 to what most folks consider their "proper...
  18. debrad

    FET Reassurance for COVERT Build

    Finally got my Covert Overdrive soldered up to the point I could give it a quick test drive (still not boxed yet). Just as many of you predicted, the SMD 4393's appear to be fine...the circuit is alive and sounding pretty darn awesome! Thanks everyone! Now I just have to decide which cap to...
  19. debrad

    Questions for Cataclysm Tap Tempo Mod

    I was doing a little more reading on the Tap Tempo board I've purchased (The Tone God's "TapTation") and, when he first introduced it in the forums of diystompboxes.com, he and several others mentioned using it with the Deep Blue Delay and the Rebote Delay. In those discussions he specifically...
  20. debrad

    Questions for Cataclysm Tap Tempo Mod

    Thanks @BurntFingers. The "specs" on the Cataclysm say it does approx. 625ms with the stock 50k pot, does that sound right? Regardless, it sounds like I should be just fine going with the tap tempo board's 100k pot (I'm not all that concerned with "pristine"). As for the 1k "antilatch...
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