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Like the title says, just built an m800 preamp pedal and it’s getting power, led lights up, but no sound. There is sound when the pedal is bypassed. Here’s a picture of the guts if anyone can see anything obvious I’m overlooking. I thought it might be the jack grounding out but I’ve moved it...

So I built these two promethium’s and neither are working. They get power but no sound and when engaged the guitar signal is cut as well. Just silence all around. Anyone have any ideas on the issue?