I have reworked a lot of desktops over the years but this person, alias Flippy9, has done extreme electrical and body work to repair an old Macbook:
A couple months ago, I found myself with a dilemma. As a favor to a friend, I traded them a perfectly working 2009 MacBook Unibody 13 Logic Board, for one with a broken headphone jack (jack snapped off inside, physical damage to the connector) and problems with the keyboard controller. It also had a busted fan.
http://braindeadlock.net/project-blackbook/