Im an idiot, I read that as 20 not 23. (long day, late at night)
Yea I know they all use the same tubes and the Grid is the same negative, Im talking about the screen, pin 3-11. Should be 135v. If its higher, say 180 the drive is there and the tube is overloaded. If its lower, say 50v there is a drive problem.
This is a good test for this set because those pulse regulators are problematic. If a resistor goes bad or the vdr fails that tube will clamp down and cause the HOT to red plate. Looks like on this set you can just pull the 6HS5 out and see if it fixes it.
