30 minutos - 2 horas
A spill shorted out the MagSafe board.
It took about an hour to disassemble, replace the board, and reassemble. Instructions were clear. The only challenge was removing the keyboard panel, which was really stuck on the superdrive side. It might be helpful if a figure showed how the panel attaches near the superdrive to assist in working it free.
It is important to keep track of which screw came from where. I wish I had some good advice for freeing the keyboard panel, but just be careful.