RCA ATC113 36" focus issue. Bad tube or flyback?

[eberts]

That set has the focus divider network built into the top of the flyback, when it opens up, you lose the 5000 volts focus voltage and you will get what you had on the screen.
I had one of those last year, I wasn't putting any money into the TV, walked it out to the curb, it vanished within 1/2 hour. I bought a new 42"LCD that was only 70 lbs.

[radiotvnut]

Originally Posted by eberts

That set has the focus divider network built into the top of the flyback, when it opens up, you lose the 5000 volts focus voltage and you will get what you had on the screen.
I had one of those last year, I wasn't putting any money into the TV, walked it out to the curb, it vanished within 1/2 hour. I bought a new 42"LCD that was only 70 lbs.

As you know, my set was big and heavy. I couldn't even move it without the cabinet creaking. Really a cheap made piece of crap. The HV lead coming out of the flyback is not much bigger than what the focus lead would have been a few years ago. I guess they'll cut corners anyway they can.

Anyway, I cooled down and pulled out a nice looking 27" CTC177 with A/V jacks. The flyback was burning so I replaced it with a used one that I had on hand. Turned out that one had a very touchy G2 control. Either it was too dark or very bright. At least I know the rest of the set is OK; so, I might order a flyback for it.

The other set on the agenda is a '99 32" Toshiba that has sound, raster, but no video. Fortunately, I have the Sams on it's 27" little brother. Between the Sams and the 'scope; maybe I can fix it. It appears to be much better built than the RCA that I destroyed.