I made a [http://www.youtube.com/watch?v=K4zF3kQrzUo|youtube video on the ipad 2 backlight solution]
if your ipad 2 was short because you forgot to turn off the ipad when changing the screen.
you want to change and replace
the backlight chip
and the backlight filter
and then if you ipad had water damage change the backlight 4R7 coil as well.
for more detailed picture showing where the ipad 1, 2, 3 backlight circuits is located please visit [http://cyberdocllc.com|http://www.cyberdocllc.com/ipad-2/]
I have fixed more than 20 ipad 2 logicboards with backlight issues so far. I havent have one fail with this solution just by changing these three surface mount components.