This is a great article that has stopped me from running around in circles, having already contacted my TV salesman and manufacturer, cable company, and cable box manufacturer. No one could tell me anything. You already answered most of my questions, but now I'm wondering if it would help to have a separate cable box for SD. My HD box is definitely not doing a good job of it. I'm using it's component output to send to my TV. What if I used a separate SD cable box to send an RF signal to my HD tv and put it into the analog RF input. Would that solve the problem??? Thanks! (I currently have a Scientific Atlanta 8300 PVR cable box and a Sharp Aquos 45" LCD TV. The HD channels are really great. The SD channels have varying degrees ghosting, pixelation, hot muddy reds, and all the other artifact you've mentioned. The worst effect is on images made up of small elements like blades of grass, leaves of trees, or, in I Robot, a close-up of sugar in a bowl.)
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