My xbox seems to be playing up, when I turn it on all starts up fine, no red lights are shown but the xbox doesn't seem to be outputting any signal to my TV.
I have tried a DVD player, and my TV recognizes it.
Some extra details:
I'm using component cables, but also have standard red,yellow and white cables.
HDTV is switched on.
The images were coming up really choppy the last time I used my xbox. So I went to display and switched from 1080i to 480p and after that it never showed any input.