Hum issue when reverb is activated - LSC

[Kiteboarder]

I'm getting a little bit of a hum when I activate the reverb on my LSC. I use a footswitch plugged into the reverb switch jack under the chassis in the back of the amp. Would this be a tube issue? Any suggestions?

 

[plan-x]

It could be. Swap v1 with the reverb tube and see if it stiil does it. Try the reverb manually with no footswitch and cable. Inspect reverb cables, give em a jiggle. Could be a loose ground wire in the tank. Just a few thoughts for ya Danny.

 

[djw]

I think when I followed the manual and used an unshielded cable for the reverb footswitch, I found it was really noisy -- hummmmm. When I switched to a regular guitar cable the hum stopped.

Weird that that's what the manual says... maybe I misunderstood. Anyway, use a shielded cable.

 

[Kiteboarder]

Oh, interesting. I'll try these suggestions and report back. Thanks guys. -Danny