High Voltage problem

[miniman82]

Originally Posted by VA561

Nick don't you miss it here in Norfolk? You could drop by here and perform surgery on the Zenith!

I tried to stay Larry, but they wouldn't let me! lol

Check the value of the resistors around the 6BK4 grid, I'm sure you'll find that one of them has drifted out of spec. Could also be the HV pot itself, use your DMM. Once you've replaced the bad parts, you should be able to set HV correctly with the pot.