#61
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I think you can get it lower, but I also think it doesn't matter much on a 5. The flyback primary just doesn't have a low enough DC resistance to make much power (or heat), which is also the same reason it will never draw enough current to make decent HV at the secondary. Run it for a good half hour, then power down and check flyback temp with your hand after HV discharge. My guess, it won't even be warm to the touch. I did everything I could to mine trying to push more out of it: installed a drive control and cranked it to max, installed a HV pot and cranked it to max, put in the strongest testing 5U4 and 3A3 rectifiers I could find, nothing helped at all. Since you can't change the primary resistance in the flyback, the only other thing likely to help is increasing voltage to the circuit. You might try using silicon rectifiers in place of the 5U4's, but I still don't think it would make much difference. The 5 just is what it is, and we have to deal with it.
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Evolution... |
#62
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Quote:
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Admiral C322C2 Regent (Restoring) RCA CTC-7 Pensbury (Restored) RCA CTC-5 Westcott (Restored) CRA CTC--4 Director 21 (Restoring) |
#63
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Here is the finished product. My camera makes the picture look a bit washed out in some photos. It is perfect in person though. And there is a picture of me with the TV after we just picked it up.
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Admiral C322C2 Regent (Restoring) RCA CTC-7 Pensbury (Restored) RCA CTC-5 Westcott (Restored) CRA CTC--4 Director 21 (Restoring) |
#64
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nice!
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#65
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That's looking pretty good.
Enjoy! Phil Nelson Phil's Old Radios http://antiqqueradio.org/index.html |
Audiokarma |
#66
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Looks good ! That's the way I got mine home too !
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Yes you can call me "Squirrel boy" |
#67
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Not quite satisfied with the color temperature. While trying to do a proper temperature setup I ran into some difficulties. The manual says to turn the green and blue background controls 30% up from being at counter clockwise. And to turn the contrast control to the halfway position. I know what all this means but how could I tell where 30% is on the screen controls and where halfway on the contrast control is?
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Admiral C322C2 Regent (Restoring) RCA CTC-7 Pensbury (Restored) RCA CTC-5 Westcott (Restored) CRA CTC--4 Director 21 (Restoring) |
#68
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That looks great! It's inspired me to start my ctc9 very soon!
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#69
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#70
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When our shop entered the color market with the CTC-15, we went to 'RCA School' put on by the distributor, where we learned setup procedure from factory reps. They
had us do the whole procedure with both the blue and green Drives at max . Then as a final touchup, back either one (or both) down a bit to get desired 'temp'. The reps may have been "off the book" regarding the Drives, but that's the way we leart it and always did it. Or, book procedures on earlier chassies may have been different. In those screen shots of you CTC-5 running, it looks like the contrast is a mite low. Last edited by old_coot88; 02-02-2016 at 07:43 PM. Reason: typo |
Audiokarma |
#71
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Did what you suggested old coot. Picture looks a lot better. Only problem is that the chroma hue drifts while the set warms up for 10 minutes then goes away but still very very slowly drifts. The contrast is no longer an issue here. The camera caused the bit of washed outness if you will.
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Admiral C322C2 Regent (Restoring) RCA CTC-7 Pensbury (Restored) RCA CTC-5 Westcott (Restored) CRA CTC--4 Director 21 (Restoring) |
#72
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Alright THIS is the finished product. I promise this time.
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Admiral C322C2 Regent (Restoring) RCA CTC-7 Pensbury (Restored) RCA CTC-5 Westcott (Restored) CRA CTC--4 Director 21 (Restoring) |
#73
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crank that color down its way over saturated.
I think it should be more like this http://videokarma.org/showpost.php?p...&postcount=224 |
#74
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Tube color TVs are never "finished", as long as they can be powered on there is ALWAYS SOMETHING that you could say needs to be done if you look close enough...
That said Dave likes them a bit too pale, swizzy likes them a bit too saturated, and red is up a bit too high relative to the other primaries.
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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 |
#75
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Dave's is the correct saturation, the picture is just too blue.
But to all of you with these old TVs, let me admonish you, PLEASE!! PLEASE!!! One word! Doilies!!! |
Audiokarma |
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