Quote:
Originally Posted by
stefski 
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Has anyone else found that a better hdmi cable makes a difference?
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Yes cable can make a difference.
Since you've watched enough stuff to be able to repeat the problems pretty much at will, you should try the following to narrow it down.
Possible it's the TV, but high odds on the cable or the DVD player.
1. Connect DVD to TV using Video (RCA) or S-Video connection
2. Connect DVD to TV using component (RGB) connection
3. Connect DVD to TV using NEW HDMI cable
4. Try using each of the 3 HDMI TV inputs
5. Connect another device to the TV using HDMI (i.e. another DVD or Blue-ray player, or a cable or satellite box).
Ensure your HDMI connection is firm and tight on both ends.
From these results you will know who's the culprit.
Note for the HDMI connections you should power down the source box before switching cables or inputs (since the HDMI protocol has to handshake to get synced).