I was tinkering with some externally powered USB electronics when I accidentally shorted 19v to ground. It seems that the MacBook (15" mid 2010) did not like this as there was a pop and a slight failed component smell. I would have thought there would be circuitry to prevent this destroying the entire board but the laptop no longer boots.
Does you have any suggestions?
is there a particular component on the board that is a likely culprit that I could replace?
I really can't afford to replace the entire logic board...
I really hope someone can help!