My projector turns on without any trouble-- I get the blue startup screen, but then it's having trouble locating the source. It says "Analog RGB searching" in the bottom right, and doesn't scroll through the different sources as it usually does. It does not recognize either my computer when I connect that to it, or my VCR (using different types of cables, of course). Also, the projector doesn't respond to the buttons on top or the remote buttons. All was working well until today! And haven't done anything different with the device. Any advice would be great! Thanks!