LG 42LB9R User Manual
Page 79
77
APPENDIX
P
Piiccttu
urree O
OK
K &
&
N
No
o sso
ou
un
nd
d
U
Un
nu
ussu
uaall sso
ou
un
nd
d ffrro
om
m
iin
nssiid
dee tth
hee T
TV
V
N
No
o o
ou
uttp
pu
utt ffrro
om
m o
on
nee
o
off tth
hee ssp
peeaakkeerrss
T
Th
heerree iiss aa p
prro
ob
blleem
m iin
n P
PC
C m
mo
od
dee.. ((O
On
nllyy P
PC
C m
mo
od
dee aap
pp
plliieed
d))
■
Adjust resolution, horizontal frequency, or vertical frequency.
■
Check the input source.
■
Use Auto configure or adjust clock, phase, or H/V position.
■
Check the signal cable.
■
Reinstall the PC video card.
T
Th
hee ssiig
gn
naall iiss o
ou
utt o
off
rraan
ng
gee..
S
Sccrreeeen
n cco
ollo
ou
urr iiss
u
un
nssttaab
bllee o
orr ssiin
ng
gllee
cco
ollo
ou
urr
V
Veerrttiiccaall b
baarr o
orr ssttrriip
pee
o
on
n b
baacckkg
grro
ou
un
nd
d &
&
H
Ho
orriizzo
on
nttaall N
No
oiissee &
&
IIn
ncco
orrrreecctt p
po
ossiittiio
on
n
T
Th
hee aauud
diio
o ffuun
nccttiio
on
n d
do
oeess n
no
ott w
wo
orrkk..
■
Press the V
VO
OLL+
+//-- ((o
orr V
Vo
ollu
um
mee)) button.
■
Sound muted? Press M
MU
UT
TE
E 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 TV is switched on or off and does not indicate a fault with the TV.