Originally Posted by htwaits
Maybe the worst source available.
I'm not familiar with the XBox, but can you have the XBox output 480i for movies? You may want to get a "real" upscaling DVD player like one of the highly rated OPPO players.
It's a good idea to indicate which DVD movies you are watching and what TV settings you are using. There is a big range of image quality in DVD movies, and how you have your TV setup is also important.
I have no idea what you should expect from this device. What is the native resolution of the material that you are sending to the TV. You might want to output that resolution and see how it looks.
Your inputs are not what most people buy a HDTV for. Under your circumstances it's very hard to tell what's wrong, but I suspect the quality of your inputs.
It takes time to figure these things out. Given the sources available to you it might be best to work on getting help with DVD movies, and setup changes first.
I have a few suggestions (some of which may be redundant):
1. If you're sending video signals through a receiver or a switchbox, try going straight to the TV and see if it improves things. If so, you may need different hardware...or fewer/shorter cables. In particular, I know of some switchboxes which can't handle the 1080 component signals.
2. Definitely make sure you try with your best analog cables, and the shorter the better. I'm not saying to go out and buy overpriced Monster cables, though if you go to a place like monoprice or parts express, you'll get great cables for cheap.
3. Use the best inputs possible. HDMI for cable, if possible, otherwise component. Avoid S-Video and composite unless you have no choice. HDMI is absolutely the best with these sets since they are digital all the way through, unlike other technologies. If you can get a DVD player with DVI or HDMI output then you'll get a better image (though I get a pretty good image just with the component out of mine).
4. For the cable, make sure you have a strong signal. I think someone was saying on another forum that you needed all splitters to be 2GHz, and as few as possible.
5. If all that fails, try to take a close-in picture with a digital camera and post it for us to see and compare against our sets.