I've searched around for this but couldn't find any answers for it:

The backlight on my D2G goes out whenever I slide it open to use the physical keyboard. When it's closed, the backlight works fine. Changing the brightness doesn't turn it on, but I can see the screen change brightness very, very slightly. So the thing works, just not exactly the right way. Are there any fixes for this? I've turned it on and off, battery pull, etc.