Now, I found this monitor in a dumpster, so I expected it to have some problems.  When I powered it up and it displayed a crystal clear picture, I thought I would have no worries, and it replaced my old 15".
A little while later little lines would appear thru the picture.  They would eventually clear up.  I thought perhaps that was why the monitor was binned.
Now the monitor will cut out with no warning whatsoever.  I had to go back to my old 15" blurry mess yesterday (although I swapped them back today, and have had no problems).
It would cut out after perhaps a minute.  I'm thinking that something in there is heating up and expanding, but then the video signal is getting cut off.
When I crack this baby open, where should I start looking first?