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  #16  
Old 08-09-2017, 01:17 PM
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Quote:
Originally Posted by Radiotronman View Post
If I turn the color control on and all the way up, I start to see more blues and greens, but still looks terrible.
This COULD be as simple as a fine tuning problem. I would do a quick check of what the picture looks like with a DVD or VCR, and if I could get it fine tuned right, go back to the color bar generator and make sure the channel frequency and fine tuning are right there.
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  #17  
Old 08-09-2017, 01:25 PM
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Quote:
Originally Posted by old_tv_nut View Post
I don't think there are springs on the CTC-5, at least not that I noticed. Also, only a screwdriver slot - no knob to pull.
Too bad! must be tough getting to the ones at the bottom of the jug.

jr
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  #18  
Old 08-09-2017, 01:54 PM
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That is some poor convergence for having been adjusted. It also looks like your greyscale (balance of gun settings) is off, not to mention the purity.

With purity and convergence that far off color will not look good even if the circuits are working right.
Turn the color off, get purity perfect, try to improve convergence significantly (you may need to check the convergence circuits and convergence yoke position if that is the best it will do), set the greyscale so the blacks are black and the whites are white, get the brightness and contrast set for good monochrome pic then and only then turn up the color and try to get that right.

When the CRT setup is that poor turning on the color circuits is little more than a check of life in those circuits, since the CRT setup problems will bury the noticability most other issues....
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  #19  
Old 08-09-2017, 03:34 PM
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Quote:
Originally Posted by jr_tech View Post
Too bad! must be tough getting to the ones at the bottom of the jug.

jr
You access them from the front after removing the trim frame, and all are equally accessible.
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  #20  
Old 08-09-2017, 04:54 PM
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As a few have said........
You need a good B&W picture before you can have a good color pix.
Turn the color level ALL the way down for now.

Your first mission is to make this as good a B&W set as possible !
I see retrace lines so start with a grey scale adj. When done you should
be able to turn down the brite & loose the pix. Also check the KINE bias
control. Remember this set never was bright & never will be. Its was
normal to watch them in a dimly lit room !

Next do purity. Try to make that perfect.

Now convergence. Follow the manual ! Remember this involves going back & forth center-edges as you go. It will NEVER be 100% perfect BTW.
The bottom is so far off that there may be a problem there. Some of the
adjustments are coils ( usually 3 ) be VERY gentile with them. They are old
& dried up ( like me ! ).

After that put a picture on it & see how it looks. If its decent now you can
turn the color up & see how she looks.

good luck
73 Zeno
LFOD !
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  #21  
Old 08-09-2017, 06:20 PM
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Ok, thanks for the help. The color and hue controls seem to do absolutely nothing. Turning them off doesnt affect it much.
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  #22  
Old 08-09-2017, 06:25 PM
matt.caputo matt.caputo is offline
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Just went through this with my Packard Bell that uses an RCA CTC-5 chassis. Send me a PM with an email address and I can forward you some photos. I just havent figured out how to attach them as a reply in this forum yet from my phone. These sets will show a fairly decent picture if set up properly.
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  #23  
Old 08-09-2017, 07:15 PM
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Another hint about the dynamic convergence on this chassis: it is AC coupled. This means that the center (DC) convergence moves when the dynamic is adjusted. One way to approach this (with a cross hatch pattern) is to first set the center DC, then adjust the dynamic controls to get parallel lines, then re-adjust the DC, which should superpose the parallel lines, at least approximately. Then you can do some fine dynamic touch up if you want, but don't get obsessive, because it will never be perfect everywhere. You can spend hours chasing slight misconvergence from one corner of the screen to another.
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  #24  
Old 08-09-2017, 09:46 PM
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Only real solution to this problem, and it's a pretty bad problem, is for someone to sit down and figure out exactly how to add the diode pack the later chassis had. They keep things from moving around too much on dynamic convergence setups, vastly reducing the year out your hair factor.
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  #25  
Old 08-31-2017, 05:39 PM
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If you have an oscilloscope checking the dc power supply for any ac would be the first thing and then checked all the B+feeds from the power supply. Sometimes the problem is starring you right in the eye.
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