Tube Amp Archive

OK great, Some things to check here. The reverb also doesn't work so it may be linked to the same problem, that was the next thing to tackle. The reverb looks fine and there is a signal from the send cable, so maybe it's all tied up in this.

Thanks

Thanks Guys,
I just replaced all the tubes which cleared up a lot of crackles and pops so I don't think it will be tubes.
Any info on where the relay is situated?

I have a USA Fender Hot Rod Deluxe, it has a channel switching issue with both the facia switch and floor switch. When the channel is switched it creates a loud buzz, enough to make you switch straight back. What's causing this?
Any ideas welcome.

Thanks