Pedal PCB Phase II not working! Any input is appreciated

lightbath

New member
Hello, I recently decided to build a phase II. I built it up and it passes sound in bypass but makes an odd gated buzzing sound when engaged. This is only present when the left trimmer is turned all the way down and the LED is as dim as it will go (see video 1 for sound example).

The LED does not blink. The left trimmer adjusts the brightness of the LED but the right trimmer does not have any effect. (see video 2). There is also a slightly audible pop when swapping from bypass to "on" but I am unsure if this is normal.

After building the first I decided to build the second as I had another board and all the parts. The second phase II is having identical issues so whatever mistake is likely common with both. I have built the closely related "duo phase" before without any issues but this one has me stumped.

Build document linked below:

Please let me know if you have any suggestions or need more pictures, readings, or information. Any help is appreciated!


 
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