PT-80 Delay - Loud pop when engaging footswitch

[Tony Forestiere]

Believe it or not, this is progress!  We now have more data to work with. 

What charge pump are you using?

Good one. I think EBK has heard this whine before.

[EBK]

Good one. I think EBK has heard this whine before.

Yes, but alas, mine has the same charge pump:

[Slowpoke101]

Have a look at this thread;

http://www.diystompboxes.com/smfforum/index.php?topic=118365.msg1101674#msg1101674

It may be helpful.

[subnormalwater]

BTW you could just remove the 12v regulator and charge pump and power the pedal from a 12v source. I built it like that because of the charge pump problems I was getting