Cause :
If the sound is not set to the TV’s internal speaker, there is no sound output from the TV speaker
IF using external device, connection status and/or sound output level of the device may affect to the problem
Perform TV Sound Test and/or Picture/Sound Reset function to check the sound output
① Sound Test) [Home] or [Setting Menu] → [Setting] → [Advanced Setting] → [Sound] → [Sound Test]
② Picture/Sound Reset) Push [Silent] button 3 times → [AV Reset] the driver installation status
When using external speaker, select output type depending on
the Connection type Sound Out) [Menu] → [Sound] → [Sound out]
1) Internal TV Speaker : Default option
2) Audio Out (Optical/HDMI ARC) : When connecting external audio devices by Optical / HDMI ARC cables
3) LG Sound sync (Optical) : When LG Sound Sync audio product is connected with an optical cable
4) LG Sound sync / Bluetooth : When LG Sound Sync-supporting audio/headset unit/speaker with Bluetooth. 5) Audio Out (Line Out) : When external audio device connect to headphone jack with 3.5 stereo cable
6) Wired Headphones : When connect to headphone jack with wired headphone
