1959 RCA Caulfield Roundie

[Radiotronman]

Hey guys,

Just had to share my most recent find. As the title states, it's a 1959 RCA Caulfield, color TV in mint condition. I haven't had a chance to do anything to it yet, but test a few tubes. So far, all it gets is a blue screen, but the crt tests strong on all three guns! Any advice on working on a ctc-9. I've worked on 60s color roundies, but this is my first 50s set with the 21cyp22 crt. At least I don't have to remove the cataract like on my other sets. I've always wanted a 50s color set. Now to find a zenith roundie, those are impossible to find in St Louis it seems.

[DaveWM]

if all you are getting is a blue raster, I would start with checking the voltages at the CRT pins, to narrow down the issue.

[Username1]

Looks like a nice set ! Good find & Good Luck !

.

[Phil Nelson]

Originally Posted by Radiotronman

Any advice on working on a ctc-9.

This recent thread has some advice on the same topic.

http://www.videokarma.org/showthread.php?t=264142

Phil Nelson
Phil's Old Radios
http://antiqueradio.org/index.html

[Radiotronman]

Thanks Phil,

I always like reading your restorations on your page and learning from them.

Scott

[Phil Nelson]

That's a beautiful set. I hope the restoration goes well.

Phil Nelson

[miniman82]

9's are about the best early color set RCA ever made, in my opinion. Reliable, cool running and easy to work on. That chassis/schematic design is what all the rest would be based on till the end of the roundies, and that's saying something. I myself had an Atherton, it was my first vintage color set and I loved it till I had to sell it in order to make room for others.

Enjoy it!

Wild guess on the issue you're having- one of the controls is dirty, have a look at the schematic diagram to see where it is:

(look for the control called 'blue screen' near the picture tube)

http://earlytelevision.org/pdf/RCA-CTC9-Sams-459-1.pdf

Its actual location is at the rear of the set/chassis, probably under a metal panel held in by a pair of screws. If twiddling that a little bit doesn't have any effect, you likely need some more in-depth troubleshooting. For starters the power supply caps will need to be replaced, for reliability's sake. Mine worked on all original parts, but did have a slight 60hz wave in the picture. Caps fixed it. After that, you may find some worn tubes or tubes loose in their socket. Shouldn't be a tough fix, 9's are as easy to work on as they come.

[Radiotronman]

Great to hear. You may be right...before I bought it, the seller said they had a picture. I told them I would need to see it on to ensure the flyback was functional and that the crt wasn't dead. They said they were playing with the brightest and lost the picture, only a very faint raster. I replace the burnt out fuse supplying the B+ ant the set lit up bright blue. The brightness seems to work properly, but the contrast makes the screen change a bit. Maybe the contrast is dirty? What would have blown the fuse, only to work again? I know I'll have to replace the supply caps.

Scott

[radiomec]

Great tv set! I'd like to find one of them too!
The trouble of the blue raster will be surely a little thing! Best wishes!

[hi_volt]

Fine looking set! Beautiful cabinet. Should be an easy restoration.

[Radiotronman]

Can anyone explain to me how the one touch fine tuning works? Do you turn this knob or push in on it?

[Radiotronman]

These are the controls. The one touch fine tuning is the top little knob.

[Phil Nelson]

That looks similar to the CTC-11 fine tuner, which you push in and THEN turn. "One touch" sounds like market-speak -- not very descriptive.

Phil Nelson

[Radiotronman]

Phil,

Sorry it might be "One Set"

Scott

[ChrisW6ATV]

That fine tuning sounds like one of the early versions of "memory fine tuning", the setup where each VHF channel could be fine-tuned independently. Pushing in on the knob was a typical way to engage the tuning gear for each channel.