I have an old tube amp that I've been working on. It's a SOS Electronics Cadet 150B. I had added a fan to try to keep the tubes cool, and when I fired it up, I have no output. The tubes are glowing, and are getting pretty orange and hot. When I turn the tune and load knobs, nothing is happening on my meter. This is my first tube amp that I have that I have even gotten close to working, and I was wondering if I'm doing something wrong, or if something else might be happening. Can anyone help me? Lew