|
I have had the 6BK4 problem too. Burned resistors in the grid/cathode circuit and the 6BK4 was drawing about 2000 microamps (2 milliamps) and overloading the flyback causing it to overheat and no HV going to the CRT.
The recommended current is about 800-1000 microamps (.8 to 1 volt on the meter across the 1000 ohm resistor) Both sides of the resistor are "Hot" B+ voltage.
Get a neon test lamp and tape it to a non-conductive stick and hold it carefully against the horiz output plate lead insulation (no direct connection) and this will tell you if there is AC high voltge being developed at the flyback primary if it lights.
Last edited by Chad Hauris; 11-18-2006 at 10:33 PM.
|