Okay, so my friend's DS Lite(it was my DS Lite, but I gave it to him for Christmas when I got a DSi for Christmas) had a broken screen. 85% of it wouldn't work/was just white. I watched a video on how to repair it, bought all the parts (new screen, new shell+triwing screwdriver) disassembled it, replaced the screen and reassembled. Now the DS won't turn on for long. I turn it on, the green LED comes on for a few seconds, the touchscreen flashes white, then the DS shuts itself off. Anyone have any suggestions as to what may cause this? My dad's an (ex-Air Force) electrician, so don't worry about a repair method being too complex.