LG 42PC3DH-UD Owners Manual - Page 66

Maintenance

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66
Reference
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.
(Option)
1.
Here's
a
great
way
to
keep
the
dust
off
your
screen
for
a
while.
Wet
a
soft
cloth
in
a
mixture
of
lukewarm
water
and
a
little
fabric
softener
or
dish
washing
detergent.
Wring
the
cloth
until
it's
almost
dry,
and
then
use
it
to
wipe
the
screen.
2.
Make
sure
the
excess
water
is
off
the
screen,
and
then
let
it
air-dry
before
you
turn
on
your
TV.
To
remove
dirt
or
dust,
wipe
the
cabinet
with
a
soft,
dry,
lint-free
cloth.
Please
do
not
use
a
wet
cloth.
If
you
expect
to
leave
your
TV
dormant
for
a
long
time
(such
as a
vacation),
it's
a
good
idea
to
unplug
the
power
cord
to
protect
against
possible
damage
from
lightning
or
power
surges.
Early
malfunctions
can be
prevented.
Careful
and
regular
cleaning
can
extend
the
amount
of
time
you
will
have
your
new
TV.
Be
sure
to
turn
the
power
off
and
unplug
the
power
cord
before
you
begin
any
cleaning.
Cleaning
the
Screen
Cleaning
the
Screen
Cleaning
the
Cabinet
Cleaning
the
Cabinet
Extended
Extended
Absence
Absence
Maintenance
Maintenance