Released June 2009 / 2.66, 2.8, or 3.06 GHz Core 2 Duo Processor

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Diagnosing keyboard + power button failure

MacBook Pro 15" Unibody Mid 2009 2.8ghz

Hi, My 2009 macbook pro (with history unknown) has a total keyboard and power button failure. I need to short pin 5 (to 6) to start it, but otherwise it is fully functional. I have tried reseating the keyboard cable without effect. I noticed the cable locking tab has been heat affected/slightly melted on the left side - though the connectors still seem to insert fully, and the tab locks down ok. Also, the right most data line on cable was flipped back at the tip a little (which i tried to rectify). Any ideas about whether this is likely a keyboard or logic board failure. Thanks

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With the history unknown, you most likely will have to replace the keyboard. To test plug in an external keyboard and mouse, boot from the pads and insure that everything works. You can then either replace the uppercase or just the keyboard with lots of labor.

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Thanks. It works fine from external keyboard. I can reset pram that way, but unfortunately, not power on.

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I'm very surprised that you can reset the PRAM from an external keyboard. My first guess is that you have a water damaged keyboard. I'll try to change the machine selection to bring up the repair guides. I'm not sure if anyone has actually made one for replacing just the keyboards, but I've done it several times. I use an electric screw driver to remove the approximately 67 tiny screws. The job takes about 1 1/2 hours but save you a couple of hundred on an upper case.

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See steps 28-30 of this guide: MacBook Pro 15" Unibody Teardown

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