reverb noise on channel 1

[andylaughs]

So I just finished loading my Mark V into a custom head cab I manufactured, and i noticed I get a bit of "hum" noise when I turn up the reverb on channel 1. The other channels are completely quiet regardless of reverb settings. Has anybody else had this experience? Any ideas?

 

[andylaughs]

Well since nobody's chimed in and I think I have the issue identified, I'll let you know what I found: One of the cables was routed close to the V1 tube. I moved it and the problem has improved significantly.