So Friday night I played a gig like most other Friday and Saturday nights for the last few months and my DT50/500 rig was singing like a bird. Went to plug it in Saturday and the volume was almost non-existent and I could only hear anything when I turned it all the way up and then it was scratchy. Had to play direct for the entire gig even though I tried it during the breaks and nothing had changed. Just plugged it in tonight (Monday) and still the same thing. I read on here to try through the effects return and get the same result. I usually run the L6 link so I tried just plugging into the front and still have the same result. There is a low hum/buzz as soon as I turn the standby switch to on. I looked and all the tubes seem to be lighting up. I'm really hoping it's not serious I think I'm still under warranty but don't want to be without my beloved head! Tried 25 and 50 watt modes and all topos I can hear the gain change but the volume is still like 10 db at full volume. PLEASE HELP!!!!!!