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My left shift, control and option keys stopped working
Hey, really hoping one of you could help me with my problem..
I have a 15" Mid 2009 MacBook Pro. The laptop suffered from a spillage and the result was the left shift key was always on. So I ordered a new keyboard/backli
This morning when I turned it on I noticed that the left shift, left control and left option keys are all unresponsive (checked with the onscreen keyboard).
I have tried the following:
- re-installing Lion from scratch.
- resetting the PRAM with right option, control, P + R. (rebooted 3 times to make sure)
- resetting the SMC - as I cannot do this with the keys, I removed the battery and held down the power button for 5 seconds. The clock reset so I assume this worked?
- re-seating the keyboard ribbon cable.
Does anyone have any ideas or solutions?
Does anyone know if one of the connectors on the ribbon cable signify these three buttons? (i.e. are the buttons grouped together on one pin which I could attempt to clean etc)
Any help, info or suggestions would be VERY much appreciated!!
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machead3
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Delete Library->Preferences:co
If this Answer is helpful please remember to return and mark it Accepted.
That file doesnt exist on my macbook. I installed a fresh copy of Lion today from scratch so that could be why. Thanks for the help. Any other ideas? Kind Regards, Richard
Read about someone using "Keyboard Character Viewer" and that it "reset/solved" a somewhat similar problem... don't recall where that was. Give it a shot. Use it, open it. press the keys and see what it shows. - Seems strange that the new keyboard doesn't work, you're positive it wasn't damaged? TRY A USB keyboard if it does the same thing maybe the keyboard controller chip is damaged?
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trx0x
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I've had the exact same problem while fixing a friend's spill damaged Macbook Pro 13 inch. After the spillage, left shift key seemed to be always on. I replaced the keyboard with a new one and tested it last night, everything worked fine. Today, the left side shift, option, and command key do not work. Looking at Keyboard Character Viewer showed nothing when depressing those keys. I haven't tried trashing the com.apple.keybo
Richard, have you had your issue resolved? I, too, was thinking this is a hardware issue, like you said, maybe a contact on the keyboard ribbon cable/socket is faulty, the one that controls those keys (if they are, in fact, grouped together.)
