[SwizzyMan]

If there is HV present then the CRT may have an open cathode connection. To fix this you need to re-weld the cathode. To do this you need a CRT tester with a remove G1 shorts function. What you do is press remove G1 shorts on the tester and as you press the button immediately hit the neck of the CRT with a screwdriver handle (not too hard though!). If you see a bright flash when you hit the neck then the cathode should be re-welded. Sometimes this only works temporarily before the cathode opens up again and sometimes it just doesn't work at all. Or your CRT could just be absolutely dead.