Attempting to resurrect my 1968 Panasonic

[jpdylon]

This was a set I got awhile back from Adam. It was a strange, rare one so I couldn't really leave it. My mistake was using it un-restored. One day something happened and there was a loud POP. No smoke, just nothing. I had lots of other work to finish so it sat for almost two years. During the time it sat it took up space and became an eyesore. No one would even take it for free.

Since I started feeling better I Recently decided to get back into the panasonic. I figure since I can't get rid of it and I don't want to crush it, I'll fix it up. I believe its a model CT-66 from 68. It is truly a marvel. All hand-wired chassis similar to zenith design, very well made power supply, soft start, and great HV regulation and DC restoration. I lightly refinished the cabinet while the chassis was out.


I replaced all of the original oil caps, power supply electrolytics, and even paper wax caps --that's right someone was still using paper wax caps in 1968. Scary, huh?


A short in the HV regulator about scared me half to death when I first fired it up after the recap. A loud hum followed by a really bright blue flash from the HV cage got my heart goin. Replaced the HV regulator, and rectifier and tried again. This time I got a nice bright raster with a razor sharp picture. All seemed ok for awhile.

Then a vertical defect showed up. The picture began to erratically move up and down. The blanking information is now hanging around the center of the screen. The sync pluses are clean and the vertical locks perfectly. You can also hear a slight sputtering in the sound at 60hz (sounds like a sawtooth.)
I have not been able to resolve the problem as of yet.



If anyone could get me some service literature on this set or point me in the right direction, I would sincerely appreciate it. This set is going to be a daily watcher and I want it to work right.