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#61
05-02-2012, 05:49 PM
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Somebody near you has got to have a degaussing coil. You can degauss your set and then see if it's still got the green blotches. If it doesen't, then you can replace a couple of parts on the degauss circuitry and get that working.
Most sets I've been around would make a HUMMMMMMMMMmmmmmmm sound when I turned it on after being off for an hour or more, that fades away really fast as the tubes warm up. If you turn it on when its cold, listen close and see if you get the hum that fades. I wouldn't adjust anything until you know the purity is OK, and the first thing is the magnetism issue. Best of luck to you. A schematic is your friend. Last edited by holmesuser01; 05-02-2012 at 05:54 PM. 
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#62
05-02-2012, 05:52 PM
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yeah, work just not giving me enough time to go to Fair Radio and dig up a diagram when they are open. Thanks! I will check tomorrow morning and see if she hums for me indicating a good degauss circuit
. Last edited by radio nut; 05-02-2012 at 06:17 PM.
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#63
05-02-2012, 05:55 PM
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I reworded the above reply to you>.>>> If you degauss it, and the blotches go away, then you fix the degauss circuit.
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#65
05-03-2012, 01:09 PM
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Well, I turned it on and heard pretty much nothing.... and I had everything in the apartment turned off. No hum.
My wife was the hardest to make silent... she knew what I was doing and still wanted to try and talk the whole time!
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#66
05-03-2012, 05:58 PM
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I used to degauss CRT's with a small power transformer the core of which was E and I laminations. I took out all the I laminations which left the three legs of the E open, the coil wound on the center leg. The ends of the legs then "shoot" plenty of field. Plug this in across the room from the TV and slowly approach the TV screen moving the transfomer all around slowly. You can get pretty close to the screen and see the colors moving around. Then back away slowly across the room before unplugging. You can also use a soldering gun for this: the built-in transformer has a good external field. Remember to hold in the switch starting across the room and don't release the switch until you've backed away again.
__________________
Reece Perfection is hard to reach with a screwdriver.
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#67
05-03-2012, 06:15 PM
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On that Toshiba - Sears tv, the degaussing coil is a 2 prong plug that goes in somewhere on the left side of the chassis, green & black wire maybe, you could unplug it, turn on the set, let the tv come on, and then plug it in and see if you can see it degauss on screen.... But you can't do that with all tvs just this one if I remember right.... worst thing it just won't come on. Wish I still had my sams on that model. It was my first color set so I was all over every inch of it.... Also the yoke has a big thumb screw making it tight on the neck, don't force it, but see that it did not ever move that will lead to color problems. Same with movement of the convergence magnets.
__________________
Yes you can call me "Squirrel boy"
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#68
05-03-2012, 06:22 PM
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Just dont move or adjust anything before you do the degauss!
Thanks for chiming in, Username. I cant remember specifics on these Toshibas, but I do remember replacing video output tubes, and audio output tubes more than anything.
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#69
05-03-2012, 07:00 PM
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Quote:
I did put a little pressure on the purity assembly trying to get my big hands in the set to check and replace tubes so hopefully it did not get moved. So the bottom half of the screen is green tinted.... but is is the whole bottom half. uniformally green. I really don't think anything has been hit or moved because in my opinion the rest of the screen seems crisp for a small tv and has good color but I am still trying to get a good picture posted here and let You gentlemen give your opinions Last edited by radio nut; 05-03-2012 at 07:32 PM. Reason: added more
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#70
05-05-2012, 11:11 AM
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Well, I put a big magnet on the screen, pulled it away and turned on the set...still green tint.After running it for a while the picture started getting jittery.
So I have a lot more work to do ! Then I remembered one thing I have not done I always do. I pulled tubes and put a small amount of marvel mystery oil on the pins and reinserted them, did the same on the degauss connector. Now the set is playing perfectly! I want to post pictures and ran my set with a dvd player but it putssmall bright retrace lines on the screen. hooked to a hd to analog converter the picture is fine but my camera see's and shows a wide moving black bar plus I can't pause live tv. Thanks for all advice given!!
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#71
05-05-2012, 11:15 AM
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I dont think I would have put a big magnet on the screen. You've probably helped to magnetize the shadow mask inside the tube, now.
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#73
05-08-2012, 02:14 PM
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well these pictures are as good as I can figure out how to do and they do not do the picture justice. I was told to slow down my shutter speed to take nicer pictures but can't find that on my camera! Again thanks everyone for helping!
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#74
05-08-2012, 02:17 PM
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Looks pretty good for a TV that was never ment to last this long. Glad you've got it going. I'd loved to see the insides... just for the memories...
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#75
05-08-2012, 02:24 PM
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I might just have to do that. Also as of now besides tubes the set is original, pic tube and everything else....still original!
In my opinion, watching the set run in person the colors are striking....... but I am sure I am biased Last edited by radio nut; 05-08-2012 at 02:25 PM. Reason: added more
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