LG 50LA6130 User Manual page 34

To use Headphone
❐
SETTINGS ➾ AUDIO ➙ Sound Out ➙ Headphone
[Only available for models with an earphone/headphone port]
Sound is output through the headphone connected to the earphone/headphone
port.
✎ If you connect headphones while the TV is powered on, it automatically
detects the headphones and sounds through them.