My Peavey XXX combo has a lot of crackling going on when its on and I'm not playing, sounds kindof like a thunderstorm. I'm going to get new tubes for it, something I've been putting off for about 2 years, I also got it used and I dont know how long ago the previous owner had the amp retubed. So needless to say its been quite a while. The amp is still rockin though, with new tubes will this fix the crackling?
Without being able to take a look around, poke things with a multimeter etc. I'd say it's a fairly good bet the tubes are to blame and a fresh set would fix it