So I went to Guitar Center today for their Black Friday sale and I ended up buying a used peavey classic 30. Its not in mint condition but I got it for pretty cheap and it has some interesting components. The previous owner installed JJ EL84s and a Weber Blue Dog speaker in it. That was pretty much the selling point for me.

Anyways there are a couple things wrong with it. The reverb does not work, and I'm getting a buzzing sound when I turn the amp up to higher volumes. Currently I am more concerned with the buzzing. Has anyone had this problem with any of there amps...any suggestions?