I bought this tv as an open box item a few weeks back and had a few questions about it. First, just last night, I was noticing that some images on the screen, particularly ones with many small lines, were creating a 'rainbow' image when they were in motion. I was reading that this doesn't happen with LCD. Am I mistaken. Also, tonight, I was watching a program when all of a sudden, the set went blank and when it came back on, everything was blue. It fixed itself within a few seconds, but I am concerned that it is something I should be worried about. Any ideas?