If you only want to replace the DC-in board, stop here and GOTO 17 (and DO NOT 4 and 6).
When the Logic board is loose, lift it up on the Harddrive end and shift slightly towards the HD, so that the USB connectors at the outside come free from under the case rim and the board can be lifted up a bit. Then there´s enough room to move the DC in board, pull the cable out with a pair of tweezers, wriggle it out from under the microphone cable and wriggle the new connector in. It can be pushed into the socket with tweezers or a small screwdriver. This worked perfect for me.
Be careful not to bend the logic board, but otherwise I think there´s much less risk of messing anything up with all the connectors and bits and pieces that need to be loosened and fastened.
Once they have, you'll be able to view a graph of their reputation gained over time.
Here's a preview of what the graph will look like:
No reputation gained yet.