Hello everyone, I tried to search for this issue, but did not find one that could help me out, so here goes:

I have a Fender Twin from ~1997 or so. This amp is the one with the three channels and the pull knobs. Anyways, the reverb works fine on the gain channel, but I get nothing on either the clean or the semi-gain channel. Any ideas on what might be wrong? I did move this amp for a jam session I had recently, and the reverb was working find then. Thanks, and let me know if more information is needed...