I was battling some switch noise on a PCB i made, selmer buzztone into a ZPMII / Deep blue delay. Thought I had it licked with a bad solder joint, but...
I still get a noise after the switch on of the delay, with fuzz already on, at the time of the delay. So Fuzz on, hit delay, XX ms later little step/sound. This is more prominent with more fuzz and volume. Pin 7 and 8 on the PT2399 increase in voltage with the volume/gain of the fuzz. Switch the fuzz off, they go to similar values (0.6ish). Is this normal? I don't know what they do. Pin 7 goes to higher voltage at the same time of the noise. Pin 8 switches immediately.
Any thoughts or ideas welcome.
Looking at moodring, and having built one, wondering if the true bypass setting that may cause more switch noise is similar, or expected. I don't want to rip this one apart if i can make it better essentially, haha.
Bump. Anyone know relationship of pin 7/8 PT2399 voltage to input gain? And how they react?