I replaced the screen with one bought off ebay, and it works fine. The most difficult operation is removing the back cover. While taking it off, as there is lots of glue holding it to the battery, I cut through the cables for the right hand page turner (kept saying to myself "Why didn't you buy the ifixit spudgers?") so now can only turn pages with the left hand switches. When removing the battery, also very securely glued to the frame, I also punctured the plastic battery cover and had to replace that as well. To remove the old screen it was necessary to break it into small pieces. The new screen is not nearly so well fixed in place. Overall this is not a simple job and to do it properly one needs to be prepared with the right tools and have foreknowledge of how it is put together.