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I'm still running the chassis out of the cabinet, waiting on me to start stripping and refinishing the cabinet since I got in a bit of practice on a Packard Bell B&W cabinet at first and did OK, and now know how to get a smooth finish.
I finally found the color sync problem, it was due to flaky ceramic capacitors in parallel with the 3.58MHz oscillator coil. I do have what looks like a bit of ringing in the picture, but it's really not noticeable most of the time. The signal looks great coming from the video detector but has the ringing at the delay line, and it seems to be the 6BK5 line driver stage that has the potential problem, or at least it was designed with this kind of response.
I'm also going to try swapping the leads on the vertical convergence transformer primary and see if that helps get the convergence a bit better. The controls only make convergence worse, and perhaps inverting the polarity of the convergence signal will allow correct adjustment. This is the part I had to rebuild myself and it's possible I got the two lead colors reversed when I assembled the transformer.
That means removing the CRT from the chassis one last time to do this and check out the video and color amplifiers as well. Then I need to clean the tuner so it will work without having to rotate the shaft back and forth for a good picture. At that point everything should be up to par.
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Erich Loepke
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