|
Sometimes the 6BK4 circuit can load the HV down too much, causing the flyback to overheat...check the voltage drop across the 1000 ohm cathode resistor...should be between .8 and 1 volt (800-1000 microamps). If it is more, then check the HV adjustment, also use a probe on the HV if possible to see if it is low because of excessive 6BK4 current.
Resistors in the 6BK4 cathode/grid circuit can change value, causing excessive current draw.
|