LG 15LC1RB - Fixing Video and Audio Problems; Troubleshooting PC Connectivity

33
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
background
&
Horizontal Noise
& Incorrect
position
?
Work the Auto
configure
or
adjust
clock,
phase,
or H/V
position. (option)