My Mac book pro mid 2010 unibody 13' suddenly stopped working and was diagnosed for water damage. followed step by step instruction to disassemble and reassemble the logic board. Even the cleaning procedure for the water damage was available on the ifixit website. The author's instructions are very clear and precise and the colour coded markings about the screws and all other instruction are very precise. My mac book is now back to life after two years. THANKS A LOT to IFIXIT and the AUTHOR.