My keyboard light has never worked on my MBA. I tried all of the tricks (flashlight directly on light sensor, reboot using control, option, plus power key) and nothing works. Is it possible my model doesn't have a keyboard light, or that it was bad out of the box? Also, when I go to Syst. Preferences, click Keyboard, there is no checkbox option for any type of keyboard light sensor etc. anywhere....? Help if you can please, thanks!