My tv is LN-S4052D supports 1080i (HDTV), 480i (SDTV), 480p (EDTV), 720p (HDTV). "Not supported mode" is message through tv. What is DBS mode? And how do you set to native mode? Is this done through tv or hr20? Do you set Resolution mode by pressing resolution button on front of dvr because I...