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#16
01-18-2014, 07:06 PM
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I have replaced all the Electrolytics, recapped the Horizontal board and most of the Vertical board and now have a nice stable picture.
There are some white ceramic tubular caps on the vertical board I haven't changed yet, they are 10% tolerance Elemenco's. I suspect the yellow caps we use are probably also within that tolerance but I think I will order some better caps from Mouser for that circuit since vertical is always troublesome with thermal drift and linearity issues. The image is so good I may skip recapping the video circuits for now, it has sound also and I don't want to screw up the alignment. This is running an 8" test CRT. 
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#17
01-21-2014, 09:00 PM
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This set has been a really easy restoration, probably because it was refubished in 1964 and probably run well into the 70's.
It started with a raster, new electrolytics and papers in the Horizontal board got me a good image, most of the rest didn't affect it much and there are still three old caps in it that I don't have on hand. Picture is really bright and sharp, picture really doesn't do it any justice. Sound is loud and clear and I didn't have to fiddle with the i.f. cans at all to get it that way. this is the Deluxe chassis which probably helps the performance too. I had to fabricate a new yoke cover centering ring retainer because the old one rotted to dust. The centering ring does nothing so I shouldn't have spent so much time on it.  The centering is fine anyway.
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#19
01-22-2014, 12:42 AM
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The centering magnets should have an effect...Assuming they did not get degaussed over the years.
__________________
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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#20
01-22-2014, 01:00 AM
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I'd have to take mine apart to verify, but I think Eric's may have something missing from it's centering ring assembly. It sure seems like it needs to be able to modify that large permanent magnet behind it.
How can a piece of aluminum alone do that? 
Last edited by Kevin Kuehn; 01-22-2014 at 01:04 AM.
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#21
02-02-2014, 08:03 PM
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I'm pretty much done with the electronics on this set, it works really well!
It's been playing Gilligans Island for the last few hours while I worked on other stuff so I made a short video to show it off. http://www.youtube.com/watch?v=XC-KLSxT02I
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