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Turns out a few of the pins from the effects board IC were grounding out on the back of the pots. In lieu of the plastic pot covers I had used a thick double sided foam tape to keep the pots hitting the board. Apparently not thick enough. Effect is now working fine!

No substitution. This is the second VFE pedal if have built and the first one works fine. I did try to jumper the inductor spot and the correct voltage was then applied to everything but still no sound. I can hear the pots working. I will try and get some voltage readings from the IC's and whip up an audio probe to see where the signal is traveling

Greetings! I just finished up building the Triumvirate and went to test it and of course no sound when the effect is on. Went to start testing the IC's and realized I was only getting 6 volts. Removed the V+ lead from the effect board and had 6v coming from the V+ off the switching board. When I measure before the inductor I get 9v. After I get 6v. If I pull the inductor out of circuit before the node/split it shows 9v on both sides of it. Any ideas where to trouble shoot next?

Thank you!

I didn't see them in the build documents. Are they available somewhere? I currently am building the Trivium, Pale Horse and Mobius Strip.

Thanks for the reply. I did swap transistors out. Still no go. I built another project using Jfets and I remember having to bias the drain to 4.5 volts. Not sure if it is the same on this but the trim pots do not let me dial down any farther than about 8.2 volts.

Some pics of the board. Tested the potentiometers and they are working correctly. Going to try to do some continuity testing of the circuit when I find some time.

Greetings! Recently built a Devil 2.0 and was having a few issues and was hoping somebody might have some suggestions that would help me debugg this unit. I get sound in bypass, not when the effect is engaged. I have gone over the board and all the components are correct values. The board was working at one point and then all of a sudden it was like the battery died ( I use a power supply). I removed the board from the enclosure and checked for grounding/touching issues. So far no luck. I used an audio probe to trace the signal up to Q1 where the sound stops. I get a signal on the gate but not through the source. The voltage on the drain is 9.12 volts. I tried to adjust the bias but the trimpot would only bring it down to about 8.25 volts. Is it not supposed to be around 4.5volts? Also the voltage at the source was .03v while the gate was about .5v. Q2 and Q3 are similar values. I tried switching with another PF5012 but nothing changed. I will post some pics tonight as I thought I took some yesterday while fiddling around with this.