Setting up for a gig Friday, my Model 410H speaker and Model T amplifier took a dive from on top of my model 215 speaker. Hit the lead player's Tube Works 212 combo, then the head went on to hit the subwoofer in front of the stage. The impact knocked out two of the power tubes in the Model T and a preamp tube in the combo and kicked the subwoofer about a foot away from the stage.
We replaced the power tubes. Had to straighten one pin. Turned the amp on. No problem. But when I hit the standby switch, one of the tubes flared. I pulled the tubes that had been knocked out, and moved one of the remaining ones so that they were in complementary positions, and tried the amp again. Worked fine, so I ran at half power. That's only 3 dB down, so it was still plenty loud.
Saturday night, I brought the power tubes from my 200S to fill the empty sockets, and again, it worked and sounded great. A lot of amps would have died after a fall like that, but my Model T is built like a tank, and just kept on truckin'.