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That's a classic vertical problem ("Foldover"). It's caused 99% of the time by a dried out electrolytic cap. Does it get better/worse as the set warms up? If so, the offending cap is usually easy to spot with a can of freeze spray. Otherwise, another method is to measure all the electrolytics in the vertical circuit with an ESR meter, or the old-fashioned way; scope it.
I don't ever speak for other techs' fees, but this job should be in the lowest category...
Charles
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Collecting & restoring TVs in Los Angeles since age 10
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