My sister and her friend were trying to be nice and clean our house today. We have an LED TV and there are a lot of smudges on it and I tried wiping it with our LED wipes but it does nothing. I asked my sister what the girl used and she said she thinks she used windex. So far the screen looks fine when we are watching TV and I only notice the smudges but could she have caused any damage to it? Like will it burn out faster or something? I know nothing about this stuff and I do NOT want to draw dh's attention to it. Anybody know? Trying to google it but not really getting anywhere.