My LCD Visio TV has what looks to be dark streaks or smears on it. They are kind of like dark wavy lines that run vertical on the TV. The streaks are translucent.I don't know what they are but you can't see them when you turn the TV off. They appear to maybe be on the inside but I can't really tell. What have not cleaned it with anything to damage it so I know that can't be it. Does anyone know what the problem could be and how to fix it?