03-12-2014, 09:02 PM
How much DC voltage do you have on the screen grid and plate of the 36?
I am wondering because when you removed the 42 the supply was unloaded and the B+ rose higher. With the higher voltages the osc started working correctly, so maybe your screen voltage is marginally low?
I am wondering because when you removed the 42 the supply was unloaded and the B+ rose higher. With the higher voltages the osc started working correctly, so maybe your screen voltage is marginally low?