MacBook: audio jack red LED??

[iShak]

anyone knows why is it there? and its significance?

cuz it turned on last night by itself but now is gone ...

 

[RoboCop001]

Isn't that the optical light for optical audio? Maybe the optical audio was turned on for some reason.

 

[WildCowboy]

That's the optical audio output, and something turned it on somehow. Or sometimes if you have an optical audio plug connected to the jack and you remove it, the system won't automatically turn off the optical signal as it should...usually re-plugging and wiggling things around a little will fix that.

 

[iShak]

thank you for such a quick reply, the 'red' light had me worried for a sec ..