1 - 2 horas
My MBP was playing Dexter Morgan with my chargers, somehow fitting them into his code.
Replacing the DC-in board was easy with the toolkit and the manual. And my MBP and I seem to have a mutual understanding of the importance of life now.
Having the right tools is everything, don't be afraid to poke around, let that spudger work it! And stop a serial killer while you're at it!