(07-10-2016, 04:41 PM)Hangman Wrote: There should be a plate resistor there, is there a voltage on the other side
Of that resistor? May just be a bad plate resistor.
I followed the circuit to the main board and found that it was not providing 480 VDC to the preamp. I removed the board from the cabinet and found that F3 1.6 Amp @ 250 volt was blown. Real convenient place for a fuse, under the board. Anyway I can replace it but was unable to find the fuse on the schematic to determine potential reasons it failed. Do you know where to find the schematic or potential loads on this fuse?