On my 722k my hd is only showing Some 4x3 not 16x9 my menus and guide display in the full 16x9 of my tv. My tv is hooked up via hdmi and when I turn on stretch nothing happens. Any one else have this issue. I also have l750. It's on all my hd channels. It's like it thinks I'm watching on rca inputs but I'm viewing with hdmi. Sorry my spell fixer re worded my title of this post. It should have said hd only 4x3?