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Correct
it was in 1971, Motorola introduced the second-generation Quasar,for the 1972 model year, and it had a switching power supply.the actual circuitry was not very different from toady's switchers, a doubler off of the AC line produced over 280 volts to operate the JA power suply module. this was a cold, (isolated) switching supply, using cold-side feedback, and it ran at the horizontal rate(actually synced to the sweep.) At the time, it was VERY unusual, and many technicians couldn't deal with it(I get this from reading a multitude of service articles from the '70's to early '80's),and so, it was replaced in 1974, IIRC, by a constant-voltage transformer supply, like Zenith used.
If only those techs knew, that in a decade or so, that was ALL that they would see, they may have reacted a little differently. But of course by the late '80's, by which time nearly ALL tv sets had switchers, most of those old techs had retired, SO I guess it didn't matter....
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