Same thing happened on my Sony crt set about 3 years ago, except that I WAS using plain water on a soft cloth. I found an ammonia free glass cleaner and got rid of the rest of the coating, no real harm done as I have no reflecting lights anyway.
I was hoping that some place made a spray touch-up coating, or something like that, that I could just fix the affected area.
The screen still has like 95% of the coating intact. So, I think I will just live with the shiny spot. Hay, I even paid extra to get the coating (the 46H83 doesn't come with it).
However, I am sure that this is not the last time that something will get onto the screen, and need to be cleaned off. That, unfortunately, is just the way things happen either with kids (or drunk friends?). I don't think a dry or damp cloth would take something sticky off.
So the challenge in the future, is to find something that will clean off what-ever, but not clean off the coating. That might not be easy.
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