I've noticed that when an effect like pitch is applied on the 202, there is a kind of buzzing sound, also just in the noise floor. I'm not talking about the high pitch noise I know you can get around that with the record level, but when I turn the record level down to avoid the high pitch noise the buzzing of the effect is quite loud. Im thinking it could be the power supply I'm using but would be good to know a workaround for it. I've tried batteries which doesn't make a difference.

Cheers

heres an example of what i mean: https://soundcloud.com/4oh4segz/c-06/s- ... al_sharing

I know this sounds maybe a bit patronising so apologies if it does but have you tried the audio output lead? Id start there, then try into a different power source if you have multiple things plugged in, then I guess I’d take it apart, clean the potentiometers and output jack and see if theres any dodgy solder joints