This also worked for me -- but not perfectly. The screen came back but the display has a green tint and fuzzy lines. Clearly, there is a ribbon of some sort that comes loose in the iPad 2 which can be "fixed" by tapping it on the back, but I think this is only a temporary solution. I wonder if using it multiple times could damage it further. Admittedly, this is my second time dropping the ipad and using this trick to fix the screen. The first time it worked perfectly, and now less than perfectly.
Has anyone used this trick and continued using the iPad for weeks or months with no recurring problems?
My guess is that the LCD needs to come off and the loose ribbon needs to be firmly reattached. Apple will do this for a fee, but they often need to remove all your data, plus they send it out for repair. I'd use a reputable third-party storefront service. After all, it's probably just soldering a broken ribbon or something, not replacing parts.