LG M2280DF-PZ Owner's Manual page 138

APPENDIX
The video function does not work.
Poor reception on
some channels
Lines or streaks
in pictures
No picture
when connecting HDMI
The audio function does not work.
Picture OK & No sound
No output from one
of the speakers
Unusual sound from
inside the product
No sound when
connecting HDMI
or USB
138
■ Station or cable product experiencing problems, tune to another sta-
tion.
■ Station signal is weak, reorient antenna to receive weaker station.
■ Check for sources of possible interference.
■ Check antenna (Change the direction of the antenna).
■ Check that your HDMI cable is High Speed HDMI Cable.
If the HDMI cables are not High Speed HDMI Cable, flickering or no
screen display can result. Please use the High Speed HDMI Cable.
■ Press the + or - button.
■ Sound muted? Press MUTE button.
■ Try another channel. The problem may be with the broadcast.
■ Are the audio cables installed properly?
■ Adjust Balance in menu option.
■ A change in ambient humidity or temperature may result in an unusual
noise when the product is turned on or off and does not indicate a
problem with the product.
■ Check HDMI cable is High Speed HDMI Cable.
■ Check USB cable over version 2.0.
■ If the sound is abnormal in the HDMI, check the audio format in your
external equipments
► Audio Supported format : Dolby Digital, PCM