#1
Hey guys, this is about a bass amp but I figured it might be best for over here.
I have a Mesa Big Block 750 and the problem I'm having is that when I plug in the footswitch the amp is almost inaudible, it connects to the back of the amp with what seems to be just a normal 1/4" instrument cable, and I have tried a few different cables. The amp works fine without it except for the fact I can't use the OD channel. I'm hopeing it's an easy fix like the footswitch is broken or maybe preamp tubes? I know a bit about general amp troubleshooting but this has got me stumped .

The other question I had... The amps currently sitting in a three space rack case taking up 2 spaces, I was wondering if I got a rack tuner and put it in above the amp if it would cause too much head inside the case and possibly damage something?
Basses:
Fender Precision Bass
Fender Jazz Bass
1967 Fender Coronado Bass II
Warwick Star Bass
Squier Precision Bass TB
#2
No one?
Basses:
Fender Precision Bass
Fender Jazz Bass
1967 Fender Coronado Bass II
Warwick Star Bass
Squier Precision Bass TB