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Ed, Quite a creative solution. If I understand your posted photo below, I assume you cut off the heads of the bolts screwed into the rear of the mask. Or did you find double ended threaded screws? Nice job.
-Steve D.
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Please visit my CT-100, CTC-5, vintage color tv site: http://www.wtv-zone.com/Stevetek/ Last edited by Steve D.; 04-19-2018 at 05:22 PM. |
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I've done all the modification work with the cabinet laying face down on a quilt/ pad. Ed Last edited by EdKozk2; 04-19-2018 at 07:38 PM. |
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Quote:
-Steve D.
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Please visit my CT-100, CTC-5, vintage color tv site: http://www.wtv-zone.com/Stevetek/ |
#4
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Over the last few weeks I was able to get the chroma circuits working marginally. They could be better. I found the original, from 1957, 3.58 mc crystal to be dead. I installed a newer crystal. This set uses color killer and color burst pots, which seem to have no effect on turning off the color. The color signal passes through anyway.
I extended the black plastic yoke spacers. This made it easier to draw the yoke inward or outward and install the thumb screw nuts. After I got the color working I had to get back to the issue of color purity. No matter what I did adjusting the yoke, convergence coil assembly, blue lateral magnet or purity rings ; I was unable to get a total red screen. Last weekend at the WARCI in Madison, VK member IsthmusTV, suggested I re-install the original purity magnets as a solution. It ended up that in my case the six original purity magnets got me to a far more consistent red screen. The three magnets on the left side of the screen had the greatest effect. The three right side magnet needed almost no adjustment. Thank you Clark . The fine convergence adjustments for this set leave a lot to be desired. When my wife and I return from the Columbus Zoo and ETF Convention,I'll get back to this set again. Ed |
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It looks like you're making great progress on the CTC-5.
Did you just push the magnet adjusters or turn them too? On my CTC-2B, 4 and 21AXP based moto you can push/pull the 6 front purity adjusters for coarse adjustment and twist for fine adjustment...I did not need them on my 21FBP converted sets, but the CTC-2B did, and I found twisting them to be the best way of minimizing impurities. I should have room in the truck for that test jig you want. I can bring it to the ETF for you if that is alright by you.
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Tom C. Zenith: The quality stays in EVEN after the name falls off! What I want. --> http://www.videokarma.org/showpost.p...62&postcount=4 |
Audiokarma |
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Ed |
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Nice progress, Ed. I think you're getting very close
Have a great time at the convention! -Clark |
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Sounds good.
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Tom C. Zenith: The quality stays in EVEN after the name falls off! What I want. --> http://www.videokarma.org/showpost.p...62&postcount=4 |
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