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Old 04-03-2011, 06:43 PM
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compucat compucat is offline
1949 Motorola 9VT1
 
Join Date: Apr 2005
Location: Suffolk, VA
Posts: 970
Quote:
Originally Posted by Tubejunke View Post
By mentioning the 3.58 oscillator tube, do you mean the "Chroma Reference Oscillator? That is the only color related tube that I see that is called an oscillator. The rest seem to be amplifiers and demodulators. I will have to look for a sub, but I don't have a "known good". I will get back to the issue with the horizontal efficiency coil with what seems to be a broken backbone or housing. In short, I would think that it should be rigid, but I can grab the coiled end and it wobbles around separating the windings a bit.
When I first got my Zenith roundie the horizontal output tube was glowing red at the plate. The problem was a damaged horizontal efficiency coil. The coil form was broken and the windings were loose on it. After replacing the coil the problem went away. It would be wise to replace that coil before it fails otherwise you risk damaging the horizontal output tube and/or the flyback.
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