Quote:
Originally Posted by Kevin Kuehn
Another possibility is that the horizontal oscillator is running so far off frequency that it's not at the resonant frequency of the flyback transformer. Although if this low HV has persisted since you had a stable picture on the set that idea could not be valid.
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OK...now that might be something...can I blame Bob Andersen? (JUST KIDDING!!!). We are talking about adjustment to the horizontal sweep oscillator? When I watched Bob's restoration of one of these 721s, in an effort to get something reasonable on the CRT, he practically bottomed out the core of L121 so I figured what the hell??? It was part of how I managed to get a picture originally and I know it's nowhere near the original position, although I didn't bottom it out. How would one go about adjusting L121 and the resonance with the flyback?