#31
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EDIT: to keep from going off topic others mentioned some sets are a pain to converge... I've found 2 things influence that bad convergence board parts (R,C and diodes), and convergence yoke placement and warping. Sometimes the yoke needs to be back or forward ~1/4" from where it's at to either have more range or overshot less, I've also seen some plastic yokes where one set of petals is angularly closer than it should be due to plastic degradation... That's not easy to deal with. What probably gave me my worst headaches until I realized was a 19" metal cabinet Zenith a respondent to this thread sold me a while ago...I spent a bunch of time troubleshooting the board because of top hat diodes that looked like they'd been soldered in by Ray Charles, then finally realized that the convergence yoke was installed BACKWARDS and the red yoke petal was over the green gun and vice versa....It got really good when I fixed that.
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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 Last edited by Electronic M; 01-17-2024 at 02:03 PM. |
#32
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The biggest question that I always had was exactly WHERE to place the parts on the neck of a 21fjp22(a), convergence clover, ETC, cause of the internal markings, you can't see where it goes like you can on later rectangular delta types, on which you can very easily see where to put it.
But I can never find a definitive answer for the rondies saying it goes, HERE! SO, I have it placed exactly as it was on my GE CTC-15 clone set when I first got it, down to the mm. in placement.
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#33
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#34
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Down to the mm is getting pretty serious!
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#35
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Well, i took a ruler, and measured how far every part was on the clone was from the socket cap, and place that same distance on my RCA.
http://suzaku.live-evil.org/GE-ctc-15-clone.jpg http://suzaku.live-evil.org/rca-ctc-16xl.jpg that is assuming they were correct on the clone in the first place!
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Audiokarma |
#36
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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 |
#37
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Perhaps +/- 0.25 inch would be adequate (for placement of neck convergence parts)
https://frank.pocnet.net/sheets/168/2/21CYP22.pdf jr Last edited by jr_tech; 01-17-2024 at 10:22 PM. Reason: clarify ( neck part placement ) |
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#39
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Too bad, the service for this model have the complete setup only for the in-line CRT (at least indicates the preferred sequence for the convergence board adjustments), so I need to apply/use the "generic" delta gun alignment then... What is the most preferred documentation for learning that (if extra degaussing not solve the problem)? About EDIT: inspired by the simple "Convergence?" thread title, I ended posting about it just here... ;-) but if moderators prefer to change this postings to a independent thread, I'm also happy :-)
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So many projects, so little time... |
#40
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So, I guess I will try and touch it up this Sat, gonna have to get to it soon anyway as one of the fans I have on the back is starting to make noise and has to be lubed, most likely due to the cold.
So I'll assume the parts on the neck are correct for now. As mentioned, the biggest pain I have with it is the nonlinearity of the R/G horz lines on the right side, always been a pain on this set. As suggested, gonna start with vertical height and linearity, and perhaps vertical and horizontal centering if needed, before going to convergence, however my test generator has no output to do height and linearity, I do have the Digital Video Essentials DVD, and hidden deep in a horrid to navigate menu system is the right tools and screens to do so, it's just a nightmare to find it!
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=^-^= Yasashii yoru ni hitori utau uta. Asu wa kimi to utaou. Yume no tsubasa ni notte. いとおしい人のために |
Audiokarma |
#41
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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 Last edited by Electronic M; 01-18-2024 at 09:31 PM. |
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Just at this moment I'm reading the post, I'm at work, but I checked this TV photos, since just now I remebered some... issue: I saw that the yoke is integrated to the convergence assembly. Even the static rings seems to be lying at same structure... oh-oh... maybe if I try at least to move the assembly sideways and back and forth, maintaning the rotation angle, to check?
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So many projects, so little time... |
#43
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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 |
#44
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And done. aside from putting the back on the set.
http://suzaku.live-evil.org/o1ne.jpg http://suzaku.live-evil.org/t2wo.jpg took a while to find the right pattern, buy i did find it! http://suzaku.live-evil.org/done-1.jpg http://suzaku.live-evil.org/done-2.jpg and after an hour of messing with it... Can never get it perfect, but who can with these things?
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=^-^= Yasashii yoru ni hitori utau uta. Asu wa kimi to utaou. Yume no tsubasa ni notte. いとおしい人のために |
#45
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Looks pretty good to me! You did a good job on the edges.
Even the wrinkles in Jonathan Harris' face look good. |
Audiokarma |
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