![]() ![]() Hard to tell from the partial picture, maybe he will post further pictures, Does the picture also seem to show the output coax attached to the end of the tank coil (?) maybe a P-L net? Hard to say since I am guessing this a partially disassembled project. The cooling fan looks to be a way too far away from the tube to give good pressure around the glass and socket base unless there is a shroud missing to focus the air across the tube and under the socket. ![]() Not sure why this is eating transformers. Interesting since either of those should have been adequate to run a Single with headroom to spare. He said this is the 3rd transformer in this amplifier(SB220 first and JB2000 last) both of which went up in smoke. I thought he said this was a single tube 3-500z? The partial picture of the RF deck looks like a single tuber. ![]()
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