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Another option on some sets, if the line voltage jumpers are in the set anyway, is to set them to high line voltage, as long as you do have at least between middle and high line voltage in your home. However I did this on my ctc-16 with average line voltage and though I have plenty of horizontal width to cover the screen, and it reduced the measured current in the flyback, I am stuck with the picture squished a little horizontally, and the set does not have a 'width' adjustment that I know of. Will probably just set it back to the other tap it was on before when I have time. So obviously it's not a magic cure but if you DO have high line voltage, and the hi/low jumper is there in the tv, give high a try and it can be easier on the set.
As for raising voltage gradually with a variac, don't see why this would make any difference one way or the other as to wear and tear on the crt or the other tubes (?)..Frenchy
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