So I have a Sony Bravia LCD(S3000-26) that I got about a 1.5 years ago. I've kind of noticed this vertical band running down the right side of the screen. (Maybe about 1/8" wide.) It doesn't move or anything and it really looks like that part of my screen is a little dimmer. (The edge is more blurry than sharp.) Is that normal or is does it mean something more serious?