Noise when in bypass?

[Focalized]

I built a couple stripped down Tube Screamer clones. Basically the YATS or CJOD lite.

I get a squeal when in bypass Mode. When the tone knob is at max.
I used the basic DPDT wiring. If I wired it with the circuit input grounded like BYOC and GGG use, will the bypass squeal go away?
Or something else?

[Paul Marossy]

Hmm... are you sure that you have that wired correctly? I would try using a grounded circuit input true bypass wiring scheme and see if that fixes the problem.

[Focalized]

Yeah I was asking if the different switch wiring would most likely work before I tried.
Seems to me it would as any circuit noise is grounded when bypassed, right?

[Paul Marossy]

Yeah I was asking if the different switch wiring would most likely work before I tried.
Seems to me it would as any circuit noise is grounded when bypassed, right?

Right.

[darron]

switch sounds like the first thing to try, but before you go undoing all of your hard work, do a test first maybe?

put the effect into bypass mode and turn the tone knob to make the tube screamer 'scream'. short a bit of wire from earth to the signal input connection on the board or switch. i'd be interested to see if that fixes the problem for you.

[Hanglow]

My Eternity clone (bufferless tubescreamer) had a lot of squeal with a standard dpdt/millenium 2 when bypassed, so I ended up switching to an input grounded switching and it worked great. So you can either go with your dpdt with the millenium 2 plus mods that ground the input or easier would be a 3pdt in place of it, assuming you still want the LED.  I'm getting a tiny delay on the mill 2+ , hopefully will work out a fix for that with RG's help.

[Paul Marossy]

I'd be very suprised if grounding the circuit input in bypass mode didn't work.

[Focalized]

Yes it worked. I should wire all things like that. Just haven't had the problem before.

[Paul Marossy]

Yes it worked. I should wire all things like that. Just haven't had the problem before.

Yay! Thanks for letting us know.