Dang man, you nailed it, haha! I pulled the board from the enclosure and sure enough, C15’s leads were ever-so-slightly bridged. After taking care of that the pedal sprang to life. Sounds fantastic too! Thanks so much for taking the time out of your weekend to help me figure this out, Brach!
The volume of the LFO noise does NOT get louder as I turn the gain trimpot counter clockwise.
Here are the voltages at each pin of the TL074 (which I’ll admit, I deviated slightly from the kit on, and installed in a 14-pin DIP socket) with the depth knob turned completely counter-clockwise and a guitar cable with nothing plugged in on the opposite end inserted into the input jack with the pedal engaged:
Yes, I can hear the relay actuating when the bypass footswitch is pressed.
Totally fine about your response time, I’m just appreciative for any help at all. I was not actually expecting any response at all to this thread until maybe sometime next week. 🙂
Thanks for such a speedy response, brach (and on the weekend, no less!). I believe the jumpers are soldered correctly. I bridged the two pads contained within the white rectangular outlines at JP1 – JP4. Just to make sure, I went ahead and reflowed the solder at each one and tested the pedal again; same result. I am able to tap out a rhythm with the tap tempo foot switch and the green LED pulses to match that tempo, so I believe the microcontroller is working.
I really appreciate you taking the time to help me troubleshoot!