Cathode & screen resistor value in 6L6 driven 5F2A?

[funkgang49]

I would like to thank everyone for their input so far and apologize for my absence - I've been overwhelmed at work and today is the first chance that I've had to recheck my readings.

That's very hot. 0.17 is the mA value (170 mA) combined plate and g2 current. Effective plate voltage is 309 (394-85). Static dissipation for plate and screen, then, is 0.17 X 309 =52.5. Plate and screen should both be unhappy. Rk should be getting awfully hot, too. The tube does not like that amp, unless something else is wrong.

My readings were incorrect because of my extreme noobness not a weak battery in my DMM. I measured from anode side of resistor to ground side of resistor - Dooh! Correct readings are with 400 ohm Cathode resistor & 360 ohm Screen resistor/ Plate voltage still 394V:
28.4V DC divided by 400 ohm = .071 (71ma)
394V HT - 28.4V = 365.6V
.071 X 365.6V = 25.96 or 26watts
That seems to be a more reasonable reading, no?

Grid voltage is 0v, that is, measured from grid pin to ground.

[martin manning]

Cathode resistor & 360 ohm Screen resistor/ Plate voltage still 394V:
28.4V DC divided by 400 ohm = .071 (71ma)
394V HT - 28.4V = 365.6V
.071 X 365.6V = 25.96 or 26ma
That seems to be a more reasonable reading, no?

Yes, it does. That's 26 Watts though, not mA, and for 6L6GC at 30W max that would be 26/30 = 87%, maybe 84% without the screen current.

[funkgang49]

Thanks Martin - watts!

g3 can be connected to the cathode

Connected pin#1 to Cathode - pin#8. Ready for EL34!