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Robert and carlinb17, thanks for your help. Even though I thought I had thoroughly cleaned the board I found a bit of residue that I think was the culprit. I gave the board another really good clean and it fired up correctly. When I read this, this was a lightbulb moment. I hadn't thought...

Yes, that's right. Thank you that gives me some guidance. I'll pull the IC and scrutinize the board when I get the chance and report back.

Thanks, that's a good suggestion. The bezel is actually plastic (painted to look metallic) but I did take the LED out of it and it doesn't seem like that is the problem. Definitely something I'll keep an eye on in the future because I did a pretty bad job this time soldering the LED.

Thanks for your response. Sorry for being unclear. I only get 9v directly from the power jack. Nothing on the + pad on the board.

Hi everyone, This is my first post on the forum, though I've been reading them for a little while now. It has been such a valuable resource to me as a beginner pedal builder. When I was in high school (20 years ago), I tried to build an MXR Blue Box from a schematic I found online and never...