"Richy" wrote in message news:JORSe.20133$cy4.8586@trnddc05...
I have one of those too. No-name version. It works well most of the time.

But once in a great while it makes a sound like an insect zapper and the
picture blinks on and off in a split second.

And occasionally the horizontal size of the picture spontaneously
changes to a slightly different size.



Open it up and look for signs of arcing around the flyback transformer,
anode lead, and the suction cup anode cap on the tube, if you can't find
any, run it with the cover off in a dark room and look for visible arcing
when it makes that sound. If you're lucky it'll be something external to the
flyback transformer that you can fix with silicone caulk.