In standby at power on, reading the front panel meters Plate current reads about 50 mA should be zero Plate voltage about 2400 or 2500V should be 3100 Ig goes negative about 40 mils Four five minutes
Likely intermittent fil to grid short. Remove one tube at a time. Bet they're Eimac. Luck & 73, Roy "In standby at power on, reading the front panel meters Plate current reads about 50 mA should be z
Sounds like an intermittently shorted tube. Most likely the grid is shorting to the filament (cathode). Let us know. 73 Jim W7RY Sent from Mail for Windows 10 In standby at power on, reading the fron