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That set is 450 ma series string. If the switch is not bad, it will probably last for another 40 years. The CRT beam current section carries virtually no current.
The RCA-Philco use of the CRT-power switch design was more driven by the control suppliers than engineer migration. There was not much creative engineering on B&W TV in the late 50s-early 60s. It was about cost control and avoiding warranty CRT replacements for burn spots.
Last edited by Don Lindsly; 08-03-2014 at 05:49 PM.
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