Need help with 1963 Zenith Roundie Convergence.

[reeferman]

You will not get satisfactory convergence with a broken cloverleaf. Give me a PM as I have a NOS one. Phil

[Dennman6]

Can't help with the convergence-BUT-my eyes were drawn to that short stack of 78rpm records you have on top of the set, at the right. What's on them, & do you play them on the RCA Victor consolette phono to the right of your gorgeous Zenith? Maybe you can get the boys interested in vintage music, too. Gotta carry that torch going down to each new generation

[classicradios]

My 9 year old already listens to vintage music and radio shows, We play 78's around the house constantly. He's helped me work on Jukes, Victrolas and Phonos since he was 4. In fact he has his own mini collection started already : 2 califone school record players, Wollensak T-1500 reel to reel, 1954 Muntz console that he watches when running his Lionel trains. He's sorted out several 78's and put them in binders and started asking for more of my reel to reel tapes. Yes, He's already a vintage nut like his Dad!

Originally Posted by Dennman6

Can't help with the convergence-BUT-my eyes were drawn to that short stack of 78rpm records you have on top of the set, at the right. What's on them, & do you play them on the RCA Victor consolette phono to the right of your gorgeous Zenith? Maybe you can get the boys interested in vintage music, too. Gotta carry that torch going down to each new generation

[oldtvman]

IF you can't get it resolved I'll be glad to drive up and take it off your hands, as I still need a flyback for my Zenith.

[drh4683]

your chroma circuits are way off. That picture of the range of the tint proves it. Never should you have blue flesh tones on one end of the control. I've seen this alot on zeniths. Tint range should go from a green to purple to know if its working right. If it goes from blue to purple then something is wrong. The burst amp plate coil needs to be adjusted for proper tones. You can do it by the book which requires a scope, or you can set the tint control mid range and adjust the burst amp plate coil for proper flesh tone. After you adjust that, check the tint to see if it goes purple to green. On Zeniths with the sheet beam demodulators, adjusting the tint control seems to make very subtle changes to the color, not like an RCA where you can see a dramatic difference from saturated purple to a saturated green when turning the control back and fourth. That being said, tend to like RCA's chroma circuits better.

How do yellow objects look? Do they seem greenish or brown? If so the injection coil is out of alignment or even at fault. Those coils are hard to adjust though as the slugs are normally siezed or the coil tube is brittle and easily breaks when one attempts to adjust it.

As for the broken cloverleaf: I think by '64 zenith started using the good TRW convergence clovers. Both of the sets I have have broken clovers. I drilled two holes one on each end of the break and used a spring with moderate tension to pull the clover together. The magnets were not separated by 120 degrees, I could line up any two of the three magnets over the guns and the other one would be in error by a degree or two. I simply rotated the clover to split the difference. It worked quite well and was still able to set convergence and maintain a good picture.

[classicradios]

Thanks for the tips Doug!
I'll try a few slight adjustments tomorrow and report back. And yes, Yellows do seem greenish.

Originally Posted by drh4683

your chroma circuits are way off. That picture of the range of the tint proves it. Never should you have blue flesh tones on one end of the control. I've seen this alot on zeniths. Tint range should go from a green to purple to know if its working right. If it goes from blue to purple then something is wrong. The burst amp plate coil needs to be adjusted for proper tones. You can do it by the book which requires a scope, or you can set the tint control mid range and adjust the burst amp plate coil for proper flesh tone. After you adjust that, check the tint to see if it goes purple to green. On Zeniths with the sheet beam demodulators, adjusting the tint control seems to make very subtle changes to the color, not like an RCA where you can see a dramatic difference from saturated purple to a saturated green when turning the control back and fourth. That being said, tend to like RCA's chroma circuits better.

How do yellow objects look? Do they seem greenish or brown? If so the injection coil is out of alignment or even at fault. Those coils are hard to adjust though as the slugs are normally siezed or the coil tube is brittle and easily breaks when one attempts to adjust it.

As for the broken cloverleaf: I think by '64 zenith started using the good TRW convergence clovers. Both of the sets I have have broken clovers. I drilled two holes one on each end of the break and used a spring with moderate tension to pull the clover together. The magnets were not separated by 120 degrees, I could line up any two of the three magnets over the guns and the other one would be in error by a degree or two. I simply rotated the clover to split the difference. It worked quite well and was still able to set convergence and maintain a good picture.

[classicradios]

OK, The old broken cloverleaf has been replaced with a NOS cloverleaf.
Here are some current screenshots and a new youtube video http://www.youtube.com/user/wurly110.../0/z-O6As0UfPI

I'm sure the set needs more adjustments but video looks very good to my un-trained eye. What do you think?

Jim

[classicradios]

PM sent Phil. Thanks.

Originally Posted by reeferman

You will not get satisfactory convergence with a broken cloverleaf. Give me a PM as I have a NOS one. Phil

[batterymaker]

Originally Posted by reeferman

You will not get satisfactory convergence with a broken cloverleaf. Give me a PM as I have a NOS one. Phil

Someone oughta take one of those, make a mold from it and do some repro castings in alumilite.

[reeferman]

is that stuff flexible?