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#46
02-11-2011, 11:44 PM
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Deguass works. I can hear it when the TV is turned on. It's quieter than a new TV, but can hear the bump sound. Come to think of it, maybe it is too quiet... will check it out with a volt meter.
With that warning in mind I think I better hold off on touching this until I have a grid generator - Murphy's law, etc. May as well enjoy watching some TV before I screw it up again! I can't believe how good the colour is now with A24 touched up.. it seems like a new TV! 
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#47
02-12-2011, 12:07 PM
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They can be amazing when working right. I have a zenith console with a funky color issue. No real greens and when I look at the set with the ntsc pattern like you are using yellow and green are pink and brown. Im kind of looking forward to fixing that problem.
If you are interested and working on old sets invest the few extra bucks and get yourself a ntsc patter generator. You can pick up one off ebay, mine are made by Leader. Most of the tv shop style generators are pretty crappy.
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#48
02-12-2011, 12:47 PM
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Something like this one?
http://cgi.ebay.com/LEADER-LCG-396-N...item588c907601 Looks like it has all the correct patterns, and is a bit cheaper than some of the other options. Don't want to comprimise usefulness by being too cheap though. Once I have my Zenith in perfect shape, I would eventually like to get a tube console for upstairs, and tune it up to perfect operating condition. Would be nice to see a larger screen Zenith chromacolor. The RCA in your chroma alignment video looks like another excellent option. I want to be very careful about getting a console, because I tend to hold on to things forever, and whatever console I buy will be the one I intend to keep going until it's impossible, so it's got to be something capable of high enough performance I won't feel bad about continuing to invest time and money long past its real value.
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#50
08-01-2011, 09:32 PM
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Well, after months of good colour, a new problem has come up with the old Zenith.
Brightness was good, colour was good, everything looked great. For the last while, the picture would occasionally jump in and out of focus. Now, the TV still has a bright picture, but all the sudden became blurry during Hell's Kitchen. The focus control seems to have lost range... at one end, it's extremely blurry, and at the other still very blurry but less blurry. Since the picture is still bright, am I right to think this might be the voltage divider at fault, or is this a sign of some other problem?
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#52
08-01-2011, 10:05 PM
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I have Sams (yes, it is 1304-3) for it already (actually paid to get it from Sams a few years ago, to fix a different problem) Can scan anything from it which would help.
Divider is white and rectangular, Zenith part 63-9893SE (63-9012) last time I had the back off it looked a little toasty but was still working fine. Looks more like a flat rectangle than a tube. I'll get into it and post a pic if it helps. Sams doesn't give the resistance value for the divider on the schematic.
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#53
08-01-2011, 10:14 PM
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Yea Im looking at it. Moyers should have that, if he has the oem part you may experience sticker shock. NTE made generic replacements that work fine. Its an NTE HVD-3 and it says its 240meg tapped at 40meg
You cant test it without special equipment. Look for the NTE one should be around $12
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#55
08-02-2011, 11:38 AM
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This morning before work turned on the tv, and after it warmed up, everything came back into focus after playing with brightness and contrast. TV had been on for a couple hours last night when it failed, so may be a temperature related thing.
Focus control is still at extreme position. One odd thing now is when brightness is at full bright position, pic is totally out of focus and very, very bright. I am assuming this is a result of lack of voltage on the focus grid. Moyers has the nte part and i've got one on order. For 12 bucks it's worth a shot!
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#56
08-05-2011, 10:58 PM
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Just after ordering the NTE from Moyer's, searched in google and got lucky with this one (last one in stock)
Figured I'd place an order since it has the right connector for the focus wire, so now I have two voltage dividers coming. Looks like this shop might be a useful source for certain zenith and rca parts. http://www.talonix.com/shop/item.aspx?itemid=13050
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#58
08-05-2011, 11:51 PM
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This stuff isn't getting easier to find - and it would force you to keep inventory of what you've got, possibly saving some time. I know I could have avoided buying lots of things if I actually knew what I have, and where it all is! Have you ever considered selling any of the sets on your site?
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#59
08-06-2011, 10:46 AM
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I have thought about selling some but hate to see them go into hands that will become frustrated with the issues and fish tank them. The truth is they will probably all get destroyed when the economy collapses and the roaming gangs of starving thugs take what they want and burn the rest.
I get emals all the time from people wanting to buy them for things like a part of a display in a vintage clothing store promoting their vintage line of chinese made trash. NO
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#60
08-06-2011, 01:13 PM
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I see your point there, I don't think a bunch of 45 year old TVs are going to be the low hanging fruit for starving thugs though!
Plus I never liked the idea of mixing a hobby and work... there's no appeal to me in trying to profit from leisure activities, in fact, it'll just turn it into more work, which is hardly the point. You've got some nice stuff on there, I'm tempted to make an offer on one of the table top colour sets next time I take a west coast road trip. The idea of buying something whose defects are known is very appealing. Gotta fit in the back seat of a Mustang.
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