4 
4 Keyboard problem - SHIFT key always on
The keyboard functions as if the SHIFT key is always on.
For instance impossible to type numbers, only the upper keys ! @ # $ % ....
Also, other keys give the wrong input. But an external keyboard works just fine.
Is there any way to fix the keyboard or to replace it?
Thanks for the help.
Update (09/27/2015)
thanks a lot for your help.
This is not my computer, but I dont think there was anything spilled in it.
the problem for instance is that it starts only on safe mode, as the shift key is always on.
I would like to try to disconnect the keyboard and work with an external keyboard. Is it easy to disconnect the keyboard?
thanks again, Serge
Update (09/29/2015)
yes, I tried that and it works. The catch to start from the normal keyboard, I have to start with command V (verbose) or with the option key. Otherwise it starts in Safe boot as the shift key is always on. with the option key on, it does not bring the list of start up drives. with the option +command + P+R it starts from the recovery partition.
My next question: Could it be just the cable of the keyboard? is it a big deal to change that? expensive?
thanks,
serge
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2 commentaires
The rub here is disconnecting the keyboard also disconnects the system power switch as well ;-{ So that won't work for day to day use. If you want to test the system you can pop the connection and then jump the power pads if you have a USB keyboard & mouse connected.
par Dan
The keyboard is a bunch of switches which are normally off (disconnected). So in your case the the uppercase line is shorted. This is a switch issue not the ribbon cable or corrosion at the conectors. I don't see replacing the cable alone would make a difference. You'll need to open the system up to inspect things to make sure.
par Dan