I'm wondering if anyone is aware of a good overall reference or troubleshooting guide for noise issues. I have a whole bunch of homemade DIY pedals - some madbean, some vero stuff from tagboardeffects, some Anderton EPFM projects... A handful of them have noise problems - some only when the circuit is engaged, some even when it is bypassed, some sound like hum, some sound like some kind of interference (not radio, but like a scratchy pot keeps getting turned intermittently).
I was just curious if anyone knew of a good resource for best practices and general rules of thumb for troubleshooting noise issues. Thanks.
Power supply, try a battery too, and then an audio probe to see where the noise is introduced.
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Wiring, proximity of input to output wires. Proximity of LFO and clock signals to input wiring and circuitry.