Thread: B&W TV Focusing
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Old 08-27-2013, 06:23 AM
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VintagePC VintagePC is offline
Tube bug got me 05/2010
 
Join Date: May 2010
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Quote:
Originally Posted by Eric H View Post
It could be your set has a problem with line pairing, instead of interlacing, the scan lines are more or less on top of each other making them more visible.
Well, this thread just got a whole lot more interesting. Now that you mention it, there _does_ seem to be a lack of scan line density that doesn't seem to match up to the 525 standard.

I'll double-check tonight... Am I correct in guessing a problem in the drive circuitry could cause this since the interlacing means you need a pair of sweep sawtooths now instead of a single identical one that repeats?

Sounds like a bear to locate and troubleshoot though as it would involve probing around with a scope...
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