76 JMP w/EL34's 100 watts. Plate volts = 462
On tubes 1, 2, and 4 I'm getting .037 mA of current. Tube 3 no current and no voltage.
I have swapped tubes, changed the 1 ohm cathode resistor, even changed the tube socket.
Can anybody help me out, I'm stumped. Thanks
cathode current on 3 tubes
Moderators: pompeiisneaks, Colossal
Re: cathode current on 3 tubes
Is its screen grid resistor good?
Is its heater heating (tube getting hot)?
Vdc on terminals 3,4 and 5?
Is its heater heating (tube getting hot)?
Vdc on terminals 3,4 and 5?
https://www.justgiving.com/page/5-in-5-for-charlie This is my step son and his family. He is running 5 marathons in 5 days to support the research into STXBP1, the genetic condition my grandson Charlie has. Please consider supporting him!
Re: cathode current on 3 tubes
Screen resistor. Thank you
Re: cathode current on 3 tubes
You're welcome, thanks for the close out report!
https://www.justgiving.com/page/5-in-5-for-charlie This is my step son and his family. He is running 5 marathons in 5 days to support the research into STXBP1, the genetic condition my grandson Charlie has. Please consider supporting him!