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I noticed when I started repairing discarded TV sets as a hobby (about 1979) that color sets were far more prone to problems than B&W sets.
My parents' RCA CTC-38 was frequently breaking down from about its sixth year onward (with a couple of failures, including the power transformer, well before that). Toward its end (11 years), it seemed every part had a lousy connection to the PC board and/or tube sockets.
When I started buying schematics, the reason became clear - four times as much stuff to go wrong.
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