Trouble with an HY-5500 CRT -- HV supply not working

[user1]

Originally Posted by Alex KL-1

Some things come to mind:

I have seem some 5" CRT TV with strange sympton, and resulted to be only the ON/OFF switch, with intermitent good/bad and resistive contact.

Maybe a bad cap near to sweep dedicated IC, or bad solder?

Or, the IC...

In any case, track down the 12V input and check the switch; they can love to have bad habits

I'll go through and find out what all the ICs are, then check the caps near the sweep generator. I did notice that one chip was partially lifted off the board -- It was still connected, but all the legs on the right side were barely going through the holes. Maybe that's part of the problem, I'll resolder that chip. I'll also check the switch, because it's a combination power switch/volume control.