Hi there! I've just picked up this amp for my son and it was missing the original footswitch. I've purchased the (what I believe to be the correct for this amp) 3 button, Channel Select/ Gain Select / Reverb switch, but cannot get it to work. When I plug the cable into the amp, the amp switches to the dirty channel, but after connecting the cable to the footswitch, the pedal does not light and switches have no effect on the amp. Is there a way to troubleshoot where the problem stems from? Thanks for any help! J.
