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Repair update
After connecting the cable and paying better attention to the picture, I noticed it was smeared and the contrast was poor. The problem turned out to be C213, a 25 uF non-polarized electrolytic cap. I thought I'd pass it along in case someone else encounters this problem.
Now, I've got to repair the convergence board. The blue convergence is way off and won't adjust. This board does not use the usual Zenith rectifier assembly. There are four glass diodes on the convergence board. That's on my agenda for tomorrow.
The audio problem turned out to be a very dirty volume control.
This set is well on the way to "daily watcher" status.
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