LG BP250 DGBRLLK Troubleshooting Manual page 5

Mode as "OPTICAL".
4) After that, use the TV remote control and do as follows.
MENU → SOUND → select Sound Out Speaker → LG Sound Sync. (Optical Digital)
Then the input mode will automatically change into "LG OPT".
5) Press the volume button and check if the sound comes out.
6) If there is sound, then it is ok.
2. Without LG Sound Sync.
1) To connect through OPTICAL cable when there is no LG Sound Sync.
2) Try to reconnect the optical cable between TV and Sound Bar.
3) Press "Select Function" button on the Sound Bar remote control and set the Input
Mode as "OPTICAL"
Then the sound will come out of both TV and the sound bar.
Quick guide on connecting your sound bar and mobile phone with
Bluetooth
Quick guide on connecting your sound bar and mobile phone
with Bluetooth
How to
▶How to set Sound Bar
1) Press "Select Function" of remote control or "F" button of the unit and select
Bluetooth.
"BT READY" will appear on the display window.
2) Pair it with mobile phone