tried my ps3, tried my upconverting philips dvd player, and finally tried outputting from PC to the plasma. none worked, but they all work on the other HDMI port. i guess it's warranty time how does warranty work? it's been under 1 year. do i call circuit city or panasonic? will panasonic send a service tech over or do i have to ship? panasonic th-42px60u has this ever happened to any other owners?