::: Thumbs ::: Next >> ::: Station # 2 in a mess, with Bob and John troubleshooting a sick AL-1200. Turns out that there is a board in there that was not on the schematic. It biases the tube down when not transmitting, but the cathode path had gone open. John removed the board altogether and all was well. He will repair it in California. This amp served well on 80 and 10 in the contest.