Traynor Custom Valve 40 no output.

[dogmeat]

do you have Q4 and Q5 in your bias circuit? the manual I have has a different bias circuit with no Q4-5

 

[Sgt_Schu1tz]

do you have Q4 and Q5 in your bias circuit? the manual I have has a different bias circuit with no Q4-5

Yes Q4 and Q5 are present.

 

[Sgt_Schu1tz]

This is from a 6L6GC datasheet. I assume this chart is for selecting the negative bias voltage to get close to the desired plate current?