I have a PAS-2. The PC-6 Phono Preamp is not working correctly.
I noticed yesterday that one of the 12ax7's is not heating.
When I swap a warm 12ax7 into the socket, the channel functions correctly until the tube cools off.
I am trying to troubleshoot why that tube is not heating.
I have noticed that where the Power supply connects to the PC-6 board at 14 and 15 (as labeled on the board) I get a reading of 22V DC at 14, yet 0 at 15. The tube that is connected to 15 is the problem.
However, the PC-5 Line stage seems to be functioning properly. (has stereo output) Again however, on PC-5 i get 22V DC at 18 and 0 at 19 (as labeled on the PC-5 Board)
Any Troubleshooting Ideas anyone may have would be helpful.