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Helpful answers
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Feb 9, 2016 11:30 AM in response to NikolaiUby joe_7399,Hello NikolaiU,
Thanks for using the Apple Support Communities!
I understand that you have a few keys that no longer function as expected on your Apple wireless keyboard. I see as well that you worked through one of our articles without a resolution.
From the following article, did you enable the keyboard viewer to see if these keys showed as being pressed there?
- If the issue persists, use Keyboard Viewer to help isolate the issue:
- Click the Language & Text pane (Mac OS X v10.6) or International pane (Mac OS X v10.5.8 or earlier) in System Preferences.
- Click the Input Sources tab (or Input Menu tab in Mac OS X 10.5.8 or earlier).
- Click the Keyboard & Character Viewer "On" checkbox to select it (click the Keyboard Viewer "On" checkbox in Mac OS X 10.5.8 or earlier).
- From the Input (flag) menu, choose Show Keyboard Viewer.

- If the keyboard is connected and detected by OS X, the keys you type will highlight in the Keyboard Viewer window. Open TextEdit (or any text application), and try to type something using the keys that were previously not responding to see if they highlight in Keyboard Viewer.
- Start from the Mac OS X Install Disc, choose Terminal from the Utilities menu and test the keys which were previously not working. If the keys work while started from the Install disc, then the keyboard itself is working correctly. Use How to troubleshoot a software issue to isolate the software issue that may be causing the keys to not respond.
One or more keys on the keyboard do not respond - Apple Support
If the issue continues, try starting your iMac in safe mode and test the issue with expected use and with the keyboard viewer as well.
OS X El Capitan: Start up in safe mode
You can also try creating a test account on your iMac to try and further isolate the issue to a user specific or system wide situation.
How to test an issue in another user account on your Mac - Apple Support
Please let us know the results so we can further assist you in this process.
Cheers!
- If the issue persists, use Keyboard Viewer to help isolate the issue:
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Feb 9, 2016 12:00 PM in response to NikolaiUby Tom Gewecke,TTry another keyboard. If it works ok, your old one needs repair or replacement most likely.
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Feb 10, 2016 12:48 PM in response to NikolaiUby Barry Hemphill,I suggest you replace the KB. From your post, it is quite old and probably failing.
Barry
