USB keyboard will not type certain keys

New USB keyboard used with the (retina, end of 2015) iMac running OS X El Capitan. Some of the keys are dead. Have reset the PRAM: issue is not resolved. Have you tried the keyboard on a MacBook Air: problem does not disappear. Have checked the keyboard settings (input methods, etc.). Nothing abnormal. Any suggestions?

HHas keyboard you wet? Just a bit of sweat to kill Apple keyboards.

Tags: Mac

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