LG 47LB1DA Owner's Manual page 123

A P P E N D I X
121
Press the VOL
or
VOLUME 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
fault with the
product.
Picture OK & No sound
Unusual sound from
inside
the
product
No
output
from
one
of the
speakers
There
is
a
problem
in PC mode.
(Only
PC mode
applied)
Adjust resolution,
horizontal
frequency,
or
vertical
frequency.
Check the
input
source.
Work the
Auto configure
or
adjust clock, phase,
or
H/V
position. (Option)
Check the
signal
cable.
Reinstall the PC video card.
The
signal is out
of
range
Screen color is unstable
or
single color
Vertical bar
or
stripe
on
background
&
Horizontal Noise &
Incorrect
position
The audio function does
not
work.
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