To resolve this issue you must restart your device by pressing the hold button and the home button at the same time, keeping them depressed for a few seconds. You will need to have a very strong light source directed at the screen when you are doing this. The LCD is still working, but it is nearly impossible to see without the backlight. Once you press home and hold together, a red slide bar will appear at the top of the screen. The reset will not initiate unless you slide the bar. A few short moments later, you should see the the white Apple logo on your display, backlight hopefully.