[LFC Video for this repair: https://www.youtube.com/watch?v=2r5o6eWD9lk ] To highlight the importance of knowing these basics, here's an example of how minor corrosion on the SMC_Reset_L circuit (remember the one that tells the SMC to turn on?) disabled a customer board. We restored it to full working order with nothing more than a toothbrush and some alcohol. Board Repair Basics:    • Board Repair Basics   Synthis - Just Messing Around: http://samsynthis.tumblr.com/post/160007840476/