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#16
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I had the same basic set in a cheaper cabinet, back in the very early 90s. I often wondered about the crt size-I knew it was smaller than usual. It was a very good performer-probably the best color of any tube set I had at the time. Mine had an intermittent vertical which eventually went out all the way. Way beyond my skills at the time so I junked it
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Bryan |
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#17
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Was the D6 chassis known for failures of fat resistors in the RGB Y circuits? Seems like I remember problems there.
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#18
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yes,there were failures of those fat resistors.seems like that was the only real common issues with these sets.they were pretty well built and had a nice picture when they were right.we saw many of them here in columbus ohio.sun tv was their largest distibutor.
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#19
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This was the earliest color TV set I remember ever seeing, in the early 1970's.
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#20
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I replaced the damper and it now has HV, color, and full sweep. The convergence is, of course, about as far off as you'd expect since the convergence board and yoke are messed up. Also, while it was playing, I heard an arc and saw a split second collapse of vertical sweep. And, the vertical hold has to be all the way to one end in order to lock the picture. The first order of business will be to repair the convergence components.
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| Audiokarma |
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#21
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Quote:
Good luck. You seem to be on the right track to getting this TV working again as it once did. A little more work with the sync and the convergence and you will have a television set you can be proud of; these older color sets can and do make excellent pictures when they are working as they should. You are saving another great old TV from certain death in a landfill as well.
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Jeff, WB8NHV Collecting, restoring and enjoying vintage Zenith radios since 2002 Zenith. Gone, but not forgotten. |
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#22
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Right off the bat, I can tell it needs a new CRT (or the old one rebuilt), as the tube now in the set has the beginnings of a cataract, judging from the tiny spots around the perimeter of the screen. My best guess is the safety glass could fall off any day now if the cataract get any worse, which it probably will.
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Jeff, WB8NHV Collecting, restoring and enjoying vintage Zenith radios since 2002 Zenith. Gone, but not forgotten. |
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#23
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Yes, the emission is fine; but, the cataract will need some attention before this project is complete. I probably won't go to the trouble in getting the convergence and purity spot on, as I'll have to remove everything from the CRT neck when I pull the tube. I might as well wait until the cataract is fixed before I get serious about purity and convergence.
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#24
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It will be interesting to find out how difficult that safety glass will be to remove. I suspect very difficult.
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#25
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Yep; but, it has to be done as the CRT in this set is not all that common.
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| Audiokarma |
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#26
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What are your guy's thoughts on a guitar string and a car battery charger on 2 amp mode? Connect the string to wood dowels, and go to town.. I was thinking of trying this but later on when I get to that set.
Ctc17 had that down pat it seems but when I did the 21FJP22 in the Ctc16 in my avatar I used Doug's method. The scary thing is the possibility of A CRT implosion if the heat is not dissapated correctly. Doug had that 23EGP22 blow up on him and he did a few cataract removals that way before.. BTW. Is that Sylvania using a 22" CRT? It sure looks like it to me. I wonder if they can sub a 23EGP22? I still have one in excellent condition I dont know what to do with..
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Honey, turn on the tv.. I'm cold! Last edited by freakaftr8; 05-09-2010 at 12:13 AM. Reason: added info |
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#27
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Yes, it uses, IIRC, a 22LP22 CRT. The actual viewable screen measures 20".
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#28
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And, cataract removal is still something that I'm not 100% comfortable with, especially after that 23EGP22 blew up on Doug.
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#29
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Dont worry to much about it blowing up. Ware long sleeves, heavy pants and a face shield just to be safe.
The green Zenith glue is soft and easy to cut through. If the face of the crt is warm and the wire is heated it goes right through like butter. You really dont even need to heat the wire, just the face to soften up the goo. The hard part with the green stuff is cleaning it off the crt and lens. It doesnt peal off in a sheet like the rca style. You have to work at it and it stinks. Its defiantly an outside project. I dont think a battery charger would work because most of them have a thermal circuit breaker and the wire is basically a short. You really must use a low voltage high current transformer and a varic to control the temp. If you have limited tools, let the crt bake face up in the sun till its good and warm to the touch then pull the guitar string through it. Do not use a heat gun on the green halo. |
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#30
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Last edited by andy; 12-08-2021 at 04:39 PM. |
| Audiokarma |
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