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#1
11-09-2009, 09:37 PM
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When jr tech gets his done maybe we will learn more? Seems like if it was a big problem back when they were new, somewhere it would be documented.
I remember our early 70s GE color console TV when I was a kid would pop and bang all the time; I guessed the grounding spring or maybe the crt shield. I don't think I ever heard another set make such mechanical noises-never noticed a purity problem, though I was pretty young.
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Bryan 
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#2
11-09-2009, 10:37 PM
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Quote:
 ), so the beam current is probably nowhere close to what you are getting. The only thing noted by the original owner was the need to tweek the convergence as the set warmed up. He usually just turned it on a half hour or so before he wanted to watch it. Is the HV stable on your set? jr
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#3
11-09-2009, 09:44 PM
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This will likely sound a bit far-fetched, but it's just a thought and could be worth something...
This 22" CRT you're dealing with... is the gun assembly in any way similar to a roundie? If so, would it be possible to remove the tube and stick a 21FBP in there (of course it won't mount on the chassis... perhaps make something like a test jig) to produce a picture? If it would, it's safe to assume you wouldn't be able to get a good picture, but if you could get anything at all, you could run it for a while and monitor whether or not there are any sudden changes. If while running a round tube, there's a sudden change in the color or purity (and naturally it's assumed you wouldn't get perfect purity with a roundie to begin with), the sudden changes on a round tube would probably reassure that your issue is on the chassis itself instead of the 22" CRT. If there aren't any sudden changes as you've described before, then you could lean more towards the 22" CRT being the problem. Like I said... kinda far fetched... but ya never know without asking.
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Charlie Trahan He who dies with the most toys still dies.
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#4
11-09-2009, 09:59 PM
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Charlie:
I like your idea. The guns are the same as a 21 inch round tube. The problem is that I really do not want to risk pulling the CRT out. It is not my set and if I break the CRT I am in big trouble! If it were mine I would definitely try that. Unfortunately I can not just pull the deflection and convergence yokes (to put on another tube) either as they are soldered in. Steve
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#5
11-09-2009, 10:20 PM
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Quote:
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Charlie Trahan He who dies with the most toys still dies.
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#6
11-10-2009, 12:14 AM
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(I won't even joke).... Seriously, how about a set of extend-O-cables? I probably have them, including the anode lead. Is the yoke removable without removing the tube? I can't remember. Charles
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Collecting & restoring TVs in Los Angeles since age 10
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#7
11-11-2009, 12:07 PM
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Any old test jig, even rectangular, should work to a degree, right? Sometimes I wish I kept intact my roundie test jig, but of course it took up as much space as a typical set. Better to just use the cables.
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Bryan
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#8
11-11-2009, 03:00 PM
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Any test jig would work but the problem is that all the wires to the yoke and convergence yoke are hardwired in, they do not plug in. I do not want to try to unsolder everything especially on the convergence panel which is very hart to get to in the first place.
Steve
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#9
11-11-2009, 09:05 PM
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that could be a real pain, to unsolder all the yoke and convergence wires.... some nice set though!
About the portacolor noises....i just switched mine on and couldn't hear this. Strange. My favorite is the crackle of the yoke absorbing all the static from the neck when a crt is switched off.....oh and BTW, "This Tube Employs INTEGRAL Implosion Protection....Do Not Adjust Your Set!" 
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#10
11-13-2009, 09:40 PM
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Well I think that I am going to call it a day with this set. I have an OK picture. Still some purity issues but the convergence is good. I put it back together and took the following pictures. Some of the pictures have curvy lines that are from the camera and not on the screen.
The sad thing now is that I have to return it to its owner. Steve
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#11
11-13-2009, 10:39 PM
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Steve,
I think current owner should be very proud to show off this TV, and extremely pleased with your work. I think you have done a fantastic job on the set. And its little purity issues can be looked on as features! Too bad it cannot stay at you house. Maybe current owner will let you work on one of the many other interesting sets he has.....
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John Folsom
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#13
11-14-2009, 09:34 AM
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Great Job Steve! And I thought I had persistance.....You are a marathon runner and I am a sprinter compared to you.
Wonderful to see this opperating. So neat; so rare!
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Vacuum tubes are used in Wisconsin to help heat your house. New Web Site under developement ME http://AntiqueTvGuy.com
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#14
11-14-2009, 12:58 AM
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You are right, Andy. But current owner has a house FULL of vintage TVs, and virtually none of 'em work! Where is the fun in that?
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John Folsom
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#15
11-14-2009, 01:14 AM
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Steve,
That receiver could be a daily watcher. Exceptional photos and the convergence is really tight. Nice job. Don't hurt yourself getting it back into the owner's home. -Steve D.
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Please visit my CT-100, CTC-5, vintage color tv site: http://www.wtv-zone.com/Stevetek/
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