help with crybaby true bypass

[talking_goat]

i just intalled a DPDT switch in my crybaby wah so that it has true bypass. i just hooked the pedal up and have a problem, sound goes through when the pedals engaged, but when it's off no sound goes through at all.
What causes this??? I left the buffer in and used these instructions:
www.members.chello.se/pastorn/fx/mods/dunlop.htm

any help is appreciated. thanks

[smoguzbenjamin]

Check your wiring That's usually a problem people have. Also, try building an audio probe! This way you can track the signal untill where it stops and hence find the problem you're experiencing. It makes debugging a hell of a lot easier

[Fret Wire]

Like Ben said, probably wiring. Here's another link that may be easier to understand.

http://homepage.ntlworld.com/s.castledine/greenfuz/wah.html

http://homepage.ntlworld.com/s.castledine/greenfuz/tb4.html

[talking_goat]

Could it possibly be that the trace between the input and the first cap hasn't been cut properly???

Also, what is an audio probe? How do you build one?

[johnnyw99]

Also, what is an audio probe? How do you build one?

Click "Debugging Page" at the top of this page. It's basically an input jack with a lead to ground and a cap (to block DC). You probe the circuit at various points until you find where it went wrong.