I have a LG Flatron w2452T that has this strange issue. Frequently on about a 1/4th of the screen there is this snowy effect. This only happens on the bottom of the screen. If I touch it - it fixes it. It seems to happen more and more often. I read on youtube that sometimes these monitors have a overheating issue and people have fixed some issues with replacing some capacitors. I think they have a different issue though with screen not working at all.
How do I troubleshoot this issue? Have you seen such a problem and fixed it? If so - how did you do it?
Thanks for reading and I look forward to your answers.