Unable to export audio on LN451B LG TV?

Mnemosyne97

Estimable
Sep 24, 2014
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How am I supposed turn on exported audio through the TV? I went into settings and there was no options for this, also I am trying to export to the 3.5mm jack for my headset. Also the TV is supposed to automatically detect this and change the setting for my but it will not.
 
Could not find specs on the TV saying it has any kind of audio output. Could that 3.5mm jack be for the PC audio input?
If it does have headphone out then when you plug your headset into it that should mechanically turn off the internal speaker and send audio to the headset. There would not be any kind of detection that would change any settings on the TV.