How can i tell if my motherboard is dead

[jonboy15]

I was replacing my lcd screen on my late 2006 imac and while i was working on it i happened to touch the power supply the back of my lcd, then a bunch of sparks started flying everywhere. So i was wondering, would i have to just replace the power supply or would everything have to be replaced?

 

[macthefork]

This is the third time this has been posted.

Only one post is necessary to get your questions answered.