Quote:
Originally Posted by technicolor
not sure what may have done it, i.... let the set for the first time for more than an hour, had it running for almost three hours, then played with the tone and color controls.
She finally locked color.
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The 3.58 oscillator tube (V703) could still be borderline weak even if you've changed it. There's a 'quick and dirty' way of determining whether the tube is weak or not..
With the set fully warmed up and the color in-lock, turn the set off for about 7 seconds and then back on. Is the color still in sync? If so, the tube is good. Or is it back to stripes, taking a while to re-acquire lock? If the latter, the tube is borderline.
(This method can also reveal a borderline hor. osc tube, osc/mixer tube in the tuner, etc.)