LG 23LX2R Owner's Manual page 29

29
Troubleshooting
Checklist
The audio function does
not
work.
Picture OK &
No sound
?
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?
Unusual sound
from inside the
product
?
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.
No
output
from
one
of the
speakers
?
Adjust
Balance in
menu
option.
Screen color is
unstable
or
single
color
?
Check the
signal
cable.
?
Reinstall the PC video card.
The
signal
is out of
range.
There is
a
problem
in PC mode.
(Only PC mode
applied)
?
Adjust resolution,
horizontal
frequency,
or
vertical
frequency.
?
Check it whether the
signal
cable is connected
or
loose.
?
Check the input
source.
Vertical bar
or
stripe
on
back-
ground
&
Horizontal Noise &
Incorrect position
?
Work the Auto
configure
or
adjust clock, phase,
or
H/V
position.