I have a 56" JVC with an 811 hooked up. I have all the problems mentioned in earlier threads with one addition. Every 17 to 20 seconds, I get a rescan on my TV. What I mean is that the screen jumps from top to bottom. This happens with any type of hookup including DVI. Is this a 811 issue or a JVC problem? I do not have these problems with my 501 or 301. Any technical insight???