LG PF50KA Owner's Manual page 162

The volume changes when I change the channel.
• The volume of different broadcasting stations transmission output may vary.
•
(Q. Settings)
Set Auto Volume
The sound does not work or only the background music is played in some
programs. (Programs produced for export by broadcasting companies)
• Wheel (OK) or
• Set your language preference in
The sound does not play when I connect to the HDMI/USB port.
• Check that you are using a high-speed HDMI® cable.
•
Check that the USB and USB cable versions are 2.0 or higher.
• Use a normal music file (*.mp3, *.wav, *.ogg, *.wma).
Sound
to On.
OK
Audio
Auto Volume
Language.
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