So a friend of mine had me look at their macbook after apple said that the logic board was broken and it would be 600 to fix it. I then opened it up and all I did was plug in the keyboard and it booted normally. I gave it back to the friend and about a week later got it back, now its not charging. I am not sure what is wrong with it at this point. It seems weird to me for it to be the logic board as it was working before. Any ideas?? Should I pull out the multimeter and start testing the board?