My Brand New CTC-7!

[SwizzyMan]

There is a lot of magenta/purplish color and certain things but you can make out skin tones and some objects. And a bit of noise in the picture but reasonably clear.

[miniman82]

If you disturbed T704, you threw off the chroma circuit alignment which is responsible for making the correct colors appear on the screen. Hook up the color bar gen and look at the screen with a mirror while adjusting the top and bottom section of T704 till the bars look right.There is also a chroma alignment procedure in the service manual, if you feel like doing it the hard way. Make sure the tint control is in the middle when doing T704 adjustments, or you'll have limited tint range when you're done.

[old_coot88]

Once you've got the bars looking nominally good, get a regular pic on screen showing people's flesh tones. Set the tint control mid-range. If the flesh tones are too green or too purple, tweak the burst phase adjustment T703. It shouldn't take more than 1/8 turn or so either direction get correct flesh tone.
Back in the day, flesh tone was the standard reference for centering the tint range.

[SwizzyMan]

OK adjusted T704 and it looks great. I still need to do some convergence adjustments. Here is a picture of what I have now. Is there any problems with any of the bars to any of you?

[SwizzyMan]

One more thing. Would it be a bad idea to use this as my daily watcher? All guns test great and the life test is good.

[roundscreen]

Originally Posted by SwizzyMan

One more thing. Would it be a bad idea to use this as my daily watcher? All guns test great and the life test is good.

You should be able to use the set. Keep a eye on the line voltage. This set was designed to run on 117v ac. and you DO NOT want to run the set any higher than 117v ac. It can cause problems with the horz circuit and burn out tubes.

[MRX37]

Originally Posted by SwizzyMan

OK adjusted T704 and it looks great. I still need to do some convergence adjustments. Here is a picture of what I have now. Is there any problems with any of the bars to any of you?

image looks really tilted. Perhaps adjust the yoke?

[Phil Nelson]

Those are good color bars.

Before messing with convergence, I'd look at a crosshatch test pattern (or dot pattern) to judge whether it really needs improvement. Read about convergence in the manuals. Convergence is a multi-step procedure, not just one little tweak. On a color "roundie," it's difficult to get perfect convergence around the edges of the screen.

You can also look at regular programming to judge convergence. Look at the edge areas of the screen -- left, right, top, bottom -- and note whether there is "color fringing" around the edges of objects. This may be more obvious where there's lettering on the screen.

Some small amount of mis-convergence is pretty common in my experience. Ask yourself if your picture would bother you in everyday watching. If the answer is "not really," you could skip convergence for the time being. If your convergence is already pretty good, and you screw it up with hasty adjustments, it could be hard to make it that good again.

Phil Nelson
Phil's Old Radios
http://antiqueradio.org/index.html

[SwizzyMan]

Kind of seems like I just need the dynamic convergence a lot. The line voltage coming from my cheater cord that came with the TV is reading 122v is that too high? If so how can I fix that? Will degauss the screen again and fix the tilt.

[SwizzyMan]

I must also note that there is a lot of noise distortion in the picture. I tried messing with the fine tuning but no luck. Should I do a color purity and dynamic convergence the red line is a bit higher when the blue and green are both one line.

[SwizzyMan]

One other thing I have tried degaussing the set atleast 5 or 6 times and I still cannot get a little bit of yellow to go away on the bottom right of the red screen. I am using a junk tv degaussing coil.

[roundscreen]

Originally Posted by SwizzyMan

Kind of seems like I just need the dynamic convergence a lot. The line voltage coming from my cheater cord that came with the TV is reading 122v is that too high? If so how can I fix that? Will degauss the screen again and fix the tilt.

Yes, That is to high. You need to find a variable auto transformer.{ variac}
Running your set 0n 122v could raise the horz output tube cathode current, And melt down the fly back. I know it sounds stupid that a difference of 5 volts could damage the set but it can. To correct the tilt, Just turn the yoke when looking at a crosshatch. You will see what he means.

[SwizzyMan]

What would be considered minimum dangerous to the set? 119v? or not any higher than 115?

[roundscreen]

Here is a picture of my variac. This unit is 20 yo and is rated at 10 amps.

[SwizzyMan]

I really dont have the money for a variac. Is there any other possible alternatives?