After a Flawless year and a Half, my 5085 is starting to act up! Intermittently I will change from HDMI (HDTV BOX) to Component 1(DVD) or Component 2 (Xbox) and the "Check Signal Cable" Warning will pop up and stay there (with picture and sound of the device working perfectly). This TV is never moved and the only change was the addition of the DVI cable from my PC. Although this problem popped up before hand. It's even ignored one or the other device's on occasion, and refused to even show them as connected! I've gone so far as to unplug everything and re-connect all devices one by one (swapping input positions)and (using Component devices from my bedroom system), to have the same problem a few days later. What is going on here. Any advice would be greatly appreciated.