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Old 02-11-2014, 04:46 PM
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Phil Nelson Phil Nelson is offline
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Quote:
Originally Posted by CaryLee View Post
they appear to be a symptom of the old set trying to process all the info contained in a more "modern" TV signal. Is it just something to "live with"?
As Kevin noted, those look like interference from Macrovision or a similar copy protection scheme. Here's one of my TVs displaying similar lines when I played a copy-protected DVD:



The lines disappeared completely when I played a non-copy protected DVD. To confirm that's what you have, play a non-copy protected DVD or hook up some other source (VHS player?) using non-copy protected material.

Retrace lines look different; they slant all the way from one side to the other. Here's one of my TVs with and without visible retrace lines (I'm using a little test CRT, not the TV's native picture tube):





Retrace lines generally disappear when you turn the brightness down beyond a certain point, while Macrovision lines are less affected.

Phil Nelson
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