C-J MV-52...bias problem

starkiller
Posts: 2,723
Finally got all my tubes installed and went to bias the 6ca7's and have run into a problem. Locations 5 & 6 biased fine but 7 & 8 won't. The red light will not come on whether i turn the screw all the way clockwise or counterclockwise.
Suggestions??
Suggestions??
Computer room Hegeman 1 SpeakersM&K VX-80 subKenwood DP-7010Cambridge Audio CXC Transport Rega DACPrimaLuna Prologue Four AmpAric Audio Tube PreampGarage Jennings Research SquareCustom tube preampCrown XLS-1000Denon DCD-1500II Modded MSB Link DAC
Post edited by starkiller on
Comments
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not familar with that amp,, whar did you have in before? were you able to bias them? Have you tried swapping the tubes? Maybe a bad bias resistor?JC approves....he told me so. (F-1 nut)