[heppyX]

The screen of one of my 3 Playbooks is not turning on anymore. I can access the PB through USB and did a full backup. It is very difficult to determine, with a black screen, if the PB is running or turned off. The only indication what it is doing is the LED. It seems to be fully charged.
Anyways I was able to reload the OS through BB-Link, but still no success, the screen does not turn on.
Does anybody have an idea what else I could try? Is there any diagnostic software?

The PB is out of warranty, I got it in the first wave of discounted PBs for a good price. It would be nice if I could rescue it, but I won't spend any money on it.

Any helpful input would be appreciated

[Branta]

Could be the screen back light has failed and you can't see the display. Try putting it onto a TV screen with the external hdmi, it might give a few clues.

[heppyX]

Okay, HDMI on the tv works. Even the touch screen works. So what else can do?
It seems to be the back light as suggested.

[FF22]

Using physical pressure, press around the screen edges or gently try flexing the frame or twisting it. That might show some loose connection. I guess you could open it and see if some cable came loose. Or you could relegate it to the hdmi-tv unit and use it with a BT mouse and watch videos, etc.

Good luck