Model A1297 Unibody: Early 2009, Mid 2009, Mid 2010 & Late 2011

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Internal keyboard, key malfunctions.

Parenthesis, return, zero, and the "-","_" keys periodically do not work or respond at all. I have trashed the preference file external keyboards work just fine. Any suggestions before parts are replaced?

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First you want to try and reset the SMC and PRAM

The PRAM is done by shutting the computer dow and pressing command, option P and R atthe same time, after it restarts, let go of the buttons and it will reboot

To do the SMC reset, follow this(copied from apple's article on this)

Shut down the computer.

Plug in the MagSafe power adapter to a power source, connecting it to the Mac if its not already connected.

On the built-in keyboard, press the (left side) Shift-Control-Option keys and the power button at the same time.

Release all the keys and the power button at the same time.

Press the power button to turn on the computer.

Note: The LED on the MagSafe power adapter may change states or temporarily turn off when you reset the SMC.

If this does not work, take a can of compressed air and spray it under the keys that are bad, removal is suggested, but not needed

To remove the keys, use a long nail(or have your friend with long nails do it, whatever is easier) and remember EXACTLY how you removed the key, and as to replacement, use your nail and remove the scissor hinge from the key and put it in exactly how it came off with the key

If this does not work, you need a new unibody assembly for this, they do not sell the keyboard separate, nor can it be removed

here is the guide to do so, the part needed should be in it

MacBook Pro 17" Unibody Upper Case Replacement

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I did the PRAM reset I am currently doing SMC reset and will let you know how it goes!

Thanks

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No such luck a part is already ordered!

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did you try and clean it as i said to?

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Brian will be eternally grateful.
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