Quote:
Originally Posted by andy
I would start by checking all of the resistors in the vertical circuit. Those carbon composition resistors tend to increase in value. They're also temperature sensitive, so if one has drifted to the edge of its tolerance, some heat could push it over the edge. If it still has a problem after replacing any bad resistors, I would try using a can of freeze spray.
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Funny, I had the same shrinking vertical sweep problem. Also the picture would roll as it warmed up. I ended up changing all of the carbon composition resitors in the sweep circuit and it is as good a new: the sweep remains constant and no more roll as it warms up!
10-03-2016, 09:24 PM
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