You might want to take a digital camera, look through with a zoom on. See if you can find any traces of cracking or breaks in the glass, in the electrical contacts, in the cable connections or the fuses on the main board. Anything unusual should be photographed and posted for evaluation.

One last check - you don't have the screen blanker or any software level display functions running, right? You might want to take a look with VNC or one of the other remote display software packages, just to get into the settings of the player to verify everything is okay there as well.