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Your capacitor is discussed in a bit more depth here: https://www.electrosmash.com/klon-centaur-analysis Just Control+F the phrase "C14" There's even a handy equation that you could do to determine what your cap is doing to the signal it passes. You know, if you're into that sorta thing.. I...

I would work one problem at a time. You need to find out why you got smoke and, more importantly, did the smoke damage something. I'd isolate it on a breadboard and check voltages first. When you are sure in your mind that the Jfet is ok, then I'd start worrying about how to fly it into the...

That thing looks like it would be easy to connect to a breadboard. When you put 9v to it, what readings do you get on the drain and the gate? And as a practical matter, maybe check continuity everywhere and make sure some solder hasn't dripped somewhere where it isn't supposed to be. And a best...

My mistake. You aren't adding a simple Jfet buffer, you are adding a blend circuit. And it's EffectsLayouts board so of course there's no schematic (I hate those guys for that. Schematics tell the story). They recommend using a J201 Jfet and their wiring scheme assumes a D-S-G pinout. What did...

Sorry, I can't sort all that out. So the buffer circuit was the thing that was smoking? Where on the schematic did you fly in the wires of the buffer. I am having a hard time tracking the 9 wires coming off of it, which seems excessive. It's a simple Jfet buffer circuit, I'd think it would have...

Hope you didn't let the magic smoke out. That's a bummer. Was a component in backwards? Were you using the audio probe on the signal path or was it touching source voltage. What component was smoking, btw? Maybe post a drawing of what precise modifications you were attempting to the circuit...

Thank you, very generous. I'm breadboarding a Paramixer while I wait for the slow boat to actually deliver the PCB just to kill time and maybe workout some possible mods to the circuit in advance. Haven't fully gotten into the breadboard mindset, but I am trying to be mindful enough to lay out...

I'm pretty new to breadboarding and don't generally like the fiddliness of it all. After spending a good hour layout out the power section of a pedal build and then it not working, I decided to build a Runoffgroove power module on some project board. This is just reliable filtered 9v power and...

I'm guessing I don't understand how Tayda shipping works. Everything I've gotten from them comes from Louisville, Co. Are they shipping from Thailand any orders that don't originate outside the US?

The board is even labelled, making it that much easier. And the traces that you can see on the board are pretty easy to interpret. I have one of these but haven't used it yet.

@delackattack If I were dropping a simple Jfet buffer into the board, I'd probably solder the + and gnd to each side of either C23 or I'd tap the appropriate legs of the ICs (pins 4 and 8). But I'd defer to more experienced builders. The VCC and VREF locations aren't actually a place. They are...

And the filter cap. Don't forget that. ;)

It's this guy right here. You can see the 9v (VCC) supply rail and the 4.5v. (VREF). This is a circuit block that is common, for the most part, to lots of these pedals. It's just the power plant for effects supplying whatever a particular circuit block or element needs, (9v+, 18v+, 9v-, 4.5v+...

I'm totally out of my depth here, but wouldn't you want to get your 9v for the buffer from the power filter section of the circuit rather than direct from the DC jack?

I ran into the exact same problem on a recent build. Just get a jumper wire, put 9v to the pedal and start touching the jumper from where you have the LED + currently to various places at that circuit and see if you can get the LED to comply. (I think I did end up removing the LED+ and put it on...

The last I looked, Jameco had LM308Ns. But you should definitely take him up on the offer of cans. (Cans just look super cool inside a Rat.)

Desoldering PCBs has been a dreaded task for me. I need to get one of these so I can look forward to my screw ups...

Something about the power section doesn't look right. Should there be a capacitor between the TL074 power and TL072? Hmm. Ps: lots of rookie mistakes. I just realized that i didn't include a switch and LED for the clean channel or a switch for the B effects.

Yeah, makes sense. At the same time, Clean Gain sounds appealing here, but not necessarily something you'd reach for all the time. Maybe it could be done with an internal trim pot, set and forget sorta thing depending on the pedals you run through it. Then you are still looking at three main...

Interesting. Why would you split the second signal at the non-inverting. It seems like my idea would accomplish the same thing. (But again, I don't know circuits well enough to elaborate). And I understand the difference between Dry Gain and Dry Level, but in this instance I just can't really...