I built a fairly pedestrian dual LFO. When I plug it in, my power supply shuts down in the way that it does when there is a short on the power rails. However, there isn’t one, at least when it’s powered off. I haven’t plugged it in for long enough to do any measurements “powered”. I checked all of the soldering and reflowed a good amount and I can’t find anything wrong. So:
Did you build it with the resettable fuses shown? Do you know which rail is tripping your PS?
I assume it’s doing this with nothing plugged into the jacks?
I was about to ask have you tried powering up with one or more ICs removed and then I realized they’re SMT so presumably no!
Hard to figure out with no schematic but there’s not a lot there that could plausibly “switch on” a short that isn’t there when powered off. I’d start with looking to see if any of the IC output pins are shorted (or have an incorrectly low resistance) to ground or either of the rails.
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I suppose I meant “in working order”.