Quote:
Originally Posted by TUD1
I got this Zenith fixed today. All I did was change 1 lytic, five bad tubes, and put on a new cord. After that easy work, it sounds absolutely incredible. Much better than my lowly 8S563. I will be buying a dial belt next week so it can tune properly. My dad got slightly emotional because he grew up with this playing all the time, and it hasn't played since 1968.
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It's best to change the bypass and coupling caps, especially the coupling caps in the audio stages. A strong possibility, that the output tubes have positive voltage on the grids.
Maybe the caps were changed in the late 60's, the last time it was used.
I don't mean to criticize your repair job, as I did the same thing, ages ago.
I just repaired it enough, to get it going.