Im trying to hook up the xbox to a older Samsung 1080i tv. Ive had it working before..but for some reason when everything is ready to go..i hit the source button to get to the game mode hdmi choice...the screen is blank and says. "Input mode not supported". This is funny since ive had the same set up working fine in the past. Its a slim 360, with a hdmi cable attached. Ive tried two cables..and it says the same. Ive tried to tweak some tv settings..with no luck. Any help??