Loss of audio on MacBook Retina 15" 2013 I have a laptop that's two weeks old. I plugged in my headphones for the first time today, and I had no audio, so I unplugged them and I still had no audio.

I have done the following:


Restart
Sleep
Shutdown
Plugged in headphones multiple times and turned
Checked for foreign objects
Reset PRAM and SMC
Restored from recovery console
Erased disc and restored new OSX from recovery console
Checked audio settings to make sure internal speaker, mute and volume and all ok.
Checked for light emitting from headphone jack
Checked that the micro switches in the jack are no depressed.


I am looking for more suggestions. I use the laptop for work everyday, so I can't afford to give it to Apple to fix at the moment.
It was a faulty logic board. Had it replaced under warranty and issue resolved.