Re: Hamlet Delay by Jon Patton

Posted by MAO on
URL: http://guitar-fx-layouts.238.s1.nabble.com/Hamlet-Delay-by-Jon-Patton-tp32472p40213.html

Another thing to try (without removing the charge pump) is to wrap a wire tightly around the 220nf, completely covering it from top to bottom (hopefully it's a box cap or greenie), and ground one end of that wire, essentially you are then shielding the exterior of the 220nf cap, just be sure you don't short anything else out.

I would just use your regular hookup wire, wrap the cap with it as best you can and ground one end with an alligator clip to the enclosure. It's just temporary, so it wont really matter how long you have to run that wire to ground it somewhere convenient. Again, just be careful you don't short anything else out.  

If the noise goes away, that cap is acting like an antenna when the stomp switch is open (which leaves the input of that cap floating)  

Looking at the layout again, I'm now worried it may be to close to the charge pump...

Jon had the 220nf and PT2399 a little bit farther away from the charge pump in his perf layout.

Now I'm going to have to build another...most likely the week of the 23rd.