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Hi, I tried out my new build and got a car alarm high pitched oscillating sound from it. Here is a clip I put on Youtube with the input cable removed from the pedal. I pulled out the input cable and the sound continued. I tested my circuit before putting it in the enclosure and didn't hear...

Thanks Nic. I soldered the pots to the other side of the PCB. I had some temporary pots on there originally and soldered them goofy foot so I could remove them more easily. Thanks again Much appreciated.

Great call. They Great call. Thanks so much. They were all 0. Turns out I was trying to fire the PCB from the output ports to the 3PDT. All sorted. I'm really pleased to learn a new diagnostic test. Many thanks.

Hi, I am unable to get my latest chaos machine build to work. I am very new to pedal building but have managed to get 5 pedals working so far. I have traced the signal from the input through R1 and 2 through to leg 3 of the TL072. Once it enters this Bermuda triangle, the signal vanishes...