Well I found out why I didn't have any sound or picture after I replaced the flyback, I had a bad connection on a wire. Stupid me! But anyway, I installed the new flyback and nothing has changed, same old flashing of picture accompanied with the static noise at the same time. So here's the scoop so far, the picture tube is ok (I removed the yoke and of course no picture but still have the noise) as is the flyback. Between flashes, actually I should say that I've probably incorrectly described what I call a flash, actually it appears there's a voltage drop whereupon the picture is lost, then regained. The picture and sound appears normal between the voltage drops. There's no visible arcing or signs of overheated components. The only component that gets hot is a 4,000 ohm resistor in the high voltage section, but it's a big one that's probably carrying quite a bit of juice. I cooled it down with freon (yep, still have some R12 auto freon left!) and nothing changed.
One fellow I talked to today mentioned something about a horizontal driver transformer. Does this make any sense to you folks? If so, I'd appreciate more details such as what does it look like, testing and so on. And and all suggestions or suspicions as to th epossible problem are greatly appreciated.
Thanks!