I have been trying all day to install my new Wievsonic N2700w. For some reason I can't get a picture. I know thats its correcty installed because I follwed the manual and believe I know what I am doing, but it won;t work. I did get a picture once using my dvd player and copmposite but now I can't even get a picture that way. I am trying to connect a Son SATHD300 to it using the component cables and rca's for audio. I also have a DVI-HDTV cable and a RGB cable and none work, but I am sure that the TVs not broken because it was working before. ANyone have this model that can possible help me out?