My wah pedal isn't working anymore. I use an ac adapter and a battery yet no sound comes out of the pedal. No blown fuses or transistors from what I can see either.
Please help.
Well that's not much to go on.

Are you handy with a multi-meter? If so I'd start by trying to narrow down where the signal stops - input jack, switch, somewhere in the circuit, fasal inductor, etc.

Have you tried isolating just the wah in your chain with known good cables and power?

You can get all sorts of diagrams and pictures here - http://stinkfoot.se/archives/tag/crybaby
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TOOOO many T.C. Electronic Pedals. . .