Quote:
Originally Posted by timmy
Well the tubes are new and I had the same line on the cbs Columbia and a slight adjustment of the horizontal frequency pot the line disappeared
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My Stromberg Carlson X22 had the same sort of thing happen, faint white line when started, that would slowly fade after 20-30 min, caused by a weak/tired 6CU6 (11w max)
This went away after it was replaced with a slightly stronger 6GW6 (17.5W max)
Not sure if this is the same as your problem, but it may be similar symptom.