LG 50UQ75003LF User Manual page 128

First of all, perform a
abnormalities in the TV.
If you are using a set-top box, turn it off, and then turn it back on.
Make sure that the set-top box is correctly connected to your TV.
The screen is fine, but it does not play any sound.
Try another programme.
If you use a set-top box, there will be no sound if you have set the volume of the set-top
box or your TV to 0 or enabled Mute. Set the volume to an appropriate level.
Sound Sound Out
Sound Out
Set the
check it once again. If you can hear the sound without any problem, check the
connection with external speakers such as sound bar and the settings of the external
speakers.
There is no sound coming from one of the speakers.
Sound Advanced Settings Balance
Adjust the balance as necessary with the Navigation button in
When you are connecting to the
correctly connected. (
The TV sound is not synchronized with the picture, or the sound sometimes breaks
up.
If this happens on only some of the programmes, it may be caused by the broadcasting
company's transmission signal. Please have your broadcasting services provider
(wired/cable) diagnose the problem.
If all programmes are out of sync, go to
Match Screen and Sound
If you are using a set-top box, consult its supplier.
The volume changes when I change the programme.
The volume of different broadcasting stations' transmission output may vary.
Sound Advanced Settings Automatic Volume Adjustment
Set Automatic Volume Adjustment
If you are using a set-top box, consult its supplier.
Support Sound Self-diagnosis
Optical Out Device + TV Speaker
to
AV IN , check if the audio left/right (white/red) cables are
AV IN
port is available in certain models only.)
and adjust the sync.
to
or
Sound Advanced Settings
On .
128
for check any
Use TV Speaker
, and then
Balance
.