Have you tried Goo Gone? It will take crayon off of things but I'm not sure how it will do on a TV!!! Is it on the screen or on the cabinet? Also, the Goo Gone label doesn't say anything about NOT using it on glass. Hope this helps and I feel sorry for ya!
My 3 boys (thankfully they have outgrown this stage now) used my previous 84" 4x3 screen with pen colours. The only thing I had that worked was a non abraisive cream cleaner and a sponge. Worked fine when all else did not.
Well guys normal glass cleaner worked. I was upset that it came of. I needed an excuse to upgrade. I think next I will give my son permanent marker and see what damage he can do. I just hope the wife does not catch on to my scheme. Thanks everyone for your input.
My eldest of 3 boys splashed his juicy cup all over my 27" TV (used to be my primary display a few years back). The picture tube went all white then all black (no picture). After that it would not work. I opened and tinkered with it but since the warranty had expired the previous month (I am not making any of this up), I went and bought a 32" TV. Months later, I was able to fix the old one so I had 2 TV's. Both are still alive today although the 32" has permanent screen damage as it was pushed off its stand 2 or 3 times by my second son.
This is all true. Whatever has been possible with my HT stuff has happened. I was so glad when I got my first FPTV setup ceiling mounted. You guys think you have it rough.