Only displays 480i
I have my tv hooked up to a Direct TV HD DVR, set on 1080i. I use color coded cables. Anyway, when I turn the TV on, in the top left it shows 480i. I have all settings on my DVR correct for any programming, up to 1080p. So, it must be something with the TV? How do I get the tv to show 1080i programming, or at least 720p?