Crate RFX65 solid state guitar amp has power but...

Question

I had my amp turned up fairly loud on the clean channel with a coupleof pedals running into it. And I started to notice a very distinctpopping sound every time I plucked the strings. Then all of the suddenmy amp just stopped producing sound. At first I thought maybe I knockeda jack loose or something, but after powering of my amp reconnectingall plugs I still get no sound. The only things that are audible is thesound of the jack being plugged into the amp, and the hum of thespeaker itself. I unplugged my guitar and all of my pedals and triedthem in another amp and everything works fine.Any help would be much appreciated....And thanks in advance.