Quote:
Originally Posted by old_coot88
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.)
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have swapped out several tubes in the color circuit no major difference.