Quote:
Originally Posted by ctc17
What would the symptom of an off frequency colorburst crystal be? One of my Zenith sets takes 45 minutes for the color to kick in and when it does the tint is all the way to one side to get the correct color. I had an issue with an rca like this once and if i rember right it was the crystal. What would happen if the crtstal drifted just a little?
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The crystal is trimmed with a capacitor or occasionally a coil. Also the phase comparator may have a bad diode (not an issue with a ringing-type crystal driver) or the burst may be weak due to misaligment or parts failure. Since in fact the set does produce locked colour I'd guess the crystal is good.
08-08-2009, 12:15 AM
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