The manual (page 8&9 in the sidebar) indicates that you should not connect a DTV or DVD by both S-Video and Component inputs at the same time. What happens if you do? Could this cause damage to the TV? A scenario that I am thinking about is that maybe the upconversion done by an HDTV STB may not be as good as the linedoubler in the TV. I would at that point want to feed an interlaced signal to the TV for normal DTV programs and the switch to the component inputs when veiwing HDTV material.