Hi.
I have an old kindle 4, which once fell. The screen was badly damaged. I bought a new screen and replaced it. The picture appeared, but it turned out to be very unstable, and therefore I made a factory settings. After that I only see the tree on the screen. The POWER button works - the restart 20 s is performed, but the book does not turn on. PC see kindle 4 via USB.
I found your site and tried this:
https://www.mobileread.com/forums/sh...d.php?t=206064
There were no problems, all operations are carried out without any problems.
But my kindle 4 remains a brick. What to do?