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#1
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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) |
#2
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Putting shields on the tubes helped a whole lot. There is still some interference with the color picture but not the B&W picture. Colors are off in some settings and text is difficult to make out. I used my CTC-7 for a picture comparison (hope you dont mind me riding your coattails with that panther lamp Phil! ). Please ignore the moire effect on the 4 that isnt visible under normal vision nor is it that distorted looking. There is still some beat frequency but that's about it for interference.
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Admiral C322C2 Regent (Restoring) RCA CTC-7 Pensbury (Restored) RCA CTC-5 Westcott (Restored) CRA CTC--4 Director 21 (Restoring) |
#3
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Looks like you've gone from 90 to 95% there, unless you want to recap the set.
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#4
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Seems like I might have to recap to ensure its longevity.
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Admiral C322C2 Regent (Restoring) RCA CTC-7 Pensbury (Restored) RCA CTC-5 Westcott (Restored) CRA CTC--4 Director 21 (Restoring) |
#5
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Seems like the color was up too far in those shots, but it's tough to get representational shots off the screen. Make sure you test all the tubes too, mine had a pair of 6Cl6's that tested nearly dead but it still worked.
__________________
Evolution... |
Audiokarma |
#6
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Hey, the more panthers the better!
That picture stands up pretty nicely against the CTC-7. This set is already working so well, I'd be inclined to use a light hand with further work. Do what you think necessary to make it safe & enjoyable to play, but don't disturb things (convergence & alignment, for instance) unnecessarily. Phil Nelson |
#7
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I'm going to replace all filter caps, all electrolytics, and out of tolerance resistors. Going to sub the two 6CL6 in the color circuit to see if I get any difference in my light blue colors not really showing 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) |
#8
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With my CTC4 what I did was replace every wax and 'lytic cap before applying power even once. Too much irreplaceable stuff in there to risk a shorted paper cap taking it out. Then I ended up replacing a few brown dip caps (installed in the 70s I'd guess) as well.
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#9
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The caps to be wary of would be PS lytics, sweep/deflection stage caps (where the unobtainium lurks), and since it is not working quite right RF/IF/color stage caps.
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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 |
#10
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Subbed the two 6CL6's. Powered it up slowly. The colors are spot on now and I now have a nice picture. Still a bit of interference and small letters are hard to read. Needs some dynamic convergence, static conv is good. Set isnt drawing a lot of current. Only about 2.5 amps according to the PR57. Operating at a full 375 watts the set would draw 3.2 amps but it isnt even near that at 115 volts. I do still plan to electronically restore this set just trying to get a base-line on what Im dealing with. Ignore the Moire effects. The blue screen is turned up a bit too high in these photos.
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Admiral C322C2 Regent (Restoring) RCA CTC-7 Pensbury (Restored) RCA CTC-5 Westcott (Restored) CRA CTC--4 Director 21 (Restoring) |
Audiokarma |
#11
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I think you want to optimize focus, increase contrast, and reduce color level.
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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 |
#12
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Amen to what Electronic M said.
Also, speaking as one who has served hard time grinding his teeth over dynamic convergence, I'd try all other adjustments & tweaks before you mess with that. And if you're convinced it's necessary, read the instructions carefully and perform the steps in order. Regards, Phil Nelson Phil's Old Radios http://antiqueradio.org/index.html |
#13
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"Ahhhhh! Patrick! The screen looks like a fishbowl and I see wavy lines everywhere!" |
#14
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Quote:
Is the CTC4, the only RCA set, that used the 6AZ8 tube. My Knight-kit R100 receiver uses two of them. |
#15
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I sure hope it isnt alignment. I'll take a look
__________________
Admiral C322C2 Regent (Restoring) RCA CTC-7 Pensbury (Restored) RCA CTC-5 Westcott (Restored) CRA CTC--4 Director 21 (Restoring) |
Audiokarma |
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