I have a Hyundai imagequest l90d+ monitor that had been working fine since I brought it about a month ago. But 3 days ago I noticed a sutile yellowish hue on the right top corner of the screen. It is barely noticable but im worried that it could appear on more areas. Is this kind of damage common on tft? Has anybody had a similiar problem? I went to a page to check for dead pixels http://www.gdargaud.net/Hack/DeadPixels.html but found none.