OK, well, then did you have a static strap, and mat? Or did you take it apart in wool socks after running around the house dragging your feet. Static electricity will zap things that you had no idea would be affected.
So, with that being said. if it worked, but doesn't now, then something was affected!
Take the Battery out, and disconect al of the cords. Try to release all reamining charges by presing the power button without the battery in.
Let us know!