Hi
I got a Z710 that blinks white.
What happened to it was that the owner got angry and threw it against the floor. Now whenever i turn on the phone the display starts blinking white and everything disappears from the screen.
I have tried to reflash it but it doesn't help, i have also opened it up reconnected the display to see if that helps.
The external display doesn't show anything and whenever i close the phone it freezes.
I uploaded a video on youtube so you can get a better description of the problem.
http://www.youtube.com/watch?v=XW90sycti_M