I have a Victoria 20112, last night it worked fine, today I fired it up, hit a chord and was greeted with ....nothing. Checked my cords, checked the tubes, checked the fuse. all seem ok. It turns on, and I hear a faint hum in the speaker but nothing seems to get through from the inputs. Hooked it up to an extension cab to make sure it wasn't the speaker and no difference...just the hum of a tube amp being on. What happened overnight?