Backlit keyboard problem

[will0407]

I just got an MBA from ebay. I turned it on, and tried to turn the backlit keyboard on, but it won't. I've pressed F5/F6 numerous times, but I keep getting the same sign popping up (i've attached a pic)

Can anyone help as to what the source of this problem is and how to fix it.

[ZAK248313]

It only enables if the rooms dark enough. It has a light censor.

There's a couple of programs out there that you can use to take proper control of it though.

[will0407]

Does that mean I can't use the backlit function unless i'm in the dark? My brother has a UK spec air, and he can use the backlit function on his whenever

[nph]

This has happened to me as well with my MBP. Just make sure you cover the light sensor for a few seconds and problem is solved. for the moment at least...:p

[rhyx]

That screenshot is when the light sensor detects enough light.

[hodgeheg]

Completely normal for Rev B. Air. No idea about Rev. A.

If you hold your hand between the light source and the sensor (near the isight camera - I forget which side it's on) you'll be able to increase/decrease the brightness. You can also this off completely in system preferences:keyboard.

Older MacBook Pros had three buttons to control the lighting, an on/off and up/down brightness. Did the rev A MBA? - I don't know.

However there is a piece of software called LabTick that enables you (for MBPs and PowerBook G4s, I don't know about Airs but it's worth a look) to manually turn the backlighting on regardless of light conditions, however I did have some weird behaviour on occasion with it - but I've only ever used it on a G4 15" and not recently.

P.S. No idea whether it's a good idea or not!

[andreab35]

Yep I've gotten the same thing as you sometimes.
To do the trick, I just cover the light sensor for a couple of seconds and then I can brighten the keyboard.

[will0407]

OK, will try that then

[rhyx]

It is rare to want the backlight on during the day, but at times it has made keys easier to read.