I have a mulitcore snake of cables that connects the pedal board to the rack, it has 5 cables.
- Power
Midi
Wah-send
Wah-return
Tap tempo
However, as a test I tried one of the other cables in the snake... the wah send and it worked a treat. I did the same with the wah return and again it worked fine. So now I've whittled the issue down to the cable. I've checked both ends for solder bridges etc and can't see anything untoward... there is continuity between both jacks, so I'm now at a loss. I think I'll just desolder both jacks and solder in 2 new ones hopefully it's just a bit of dodgy soldering... I'll report back my findings