My wife's iPad 2 screen is dark. If I use a flashlight I can I see the icons & get it to do anything else but there is no backlight at all.
There are a few things that could be happening here.
- Need a hard reboot (Hold Power and Home buttons at the same time for about 10-15 seconds)
- Loose LCD cable or LCD cable replacement
- LCD Replacement
- LCD Backlight Converter went out(There are companies out there that will replace this for you at roughly $80, but you need to safely remove the glass for them)
Best of Luck!