I heard the familiar sound of a shorted power tube and look in back long enough to see lightining flashes in one of the power tubes. I could smell a little bit of a burnt smell. I replaced the output tubes (new Tungsol 5881) with another matches set and installed the bias meter. The bias meter was all over the place so I know something else is wrong. I'm thinking maybe a resistor went south when the tube shorted. I've just sent Greg an e-mail and know I"ll heard back from him real soon. He's always been one of the best to take care of customer problems.