Actually, go to 480P let the box set to that, then go back go to 1080I or 720P. It has happened that even though the box says 1080I it isn't and this usually fixes it.
Also, are you looking at output 1? Output 2 is not an HD output.
Actually, go to 480P let the box set to that, then go back go to 1080I or 720P. It has happened that even though the box says 1080I it isn't and this usually fixes it.
Also, are you looking at output 1? Output 2 is not an HD output.