First post, by maximus
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Cleaning a CRT monitor is easy: just spray some Windex on a paper towel, wipe the screen down, dry it, and you're done.
LCD monitors aren't so easy. My current approach is to moisten a paper towel with isopropyl alcohol (70% or 99%, doesn't seem to make a difference) and use this to clean the screen. I usually have to repeat this a few times, depending on how dirty the screen is. This removes fingerprints and... what are those little spots, anyway? Dried-on spittle? Anyway, those will be gone, but the alcohol leaves a grayish film. I then moisten a paper towel with tap water and use that to clean off the film, finishing up with a microfiber cloth.
This is a pain in the butt, but I don't know of a better way.
Everything I've read says not to use Windex or anything that contains ammonia on LCDs, so I don't. Lots of places say not to use paper towels or alcohol, but I've never had a problem with either. It's possible I haven't run into a truly touchy LCD yet, but the main problem with alcohol seems to be that it just doesn't work very well.
Some articles say just to use a microfiber cloth moistened with water... have the authors ever actually had to clean a LCD screen? Especially a particularly dirty one? Those little spots are damn near impossible to get off. Sometimes I end up rubbing them off with the tip of my finger; the skin seems to be just abrasive enough to remove the dirt without damaging the surface.
What's your strategy for cleaning LCD monitors? Feel free to also share horror stories of cleanings gone wrong so the rest of us can avoid making the same mistakes.