Appendix – LG 42PB4D User Manual
Page 101
APPENDIX
99
T
Th
he
e aau
ud
diio
o ffu
un
nccttiio
on
n d
do
oe
ess n
no
ott w
wo
orrkk..
T
Th
he
erre
e iiss aa p
prro
ob
blle
em
m iin
n P
PC
C m
mo
od
de
e.. ((O
On
nlly
y P
PC
C m
mo
od
de
e aap
pp
plliie
ed
d))
■
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
■
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
(Invalid format)
Screen colour is unstable
or single colour
Vertical bar or stripe on
background &
Horizontal Noise &
Incorrect position