LG 42LB5800-SB - Page 53

C. Audio error
Established
dt
Error
2014 1 2
Standard Repair Process
→ abnormal audio/discontinuation/noise is same after “Check input signal” compared to No audio
C.
Audio
error
Wrecked audio/ discontinuation/noise
d
a
t
e
Revised date
9/13
LCD TV
Error
symptom
2014
.
1
.
2
Wrecked audio/
Discontinuation/
Noise for
all audio
Check and replace
speaker and
connector
Y
Check input
signal
Signal
Y
Check audio
B+ Voltage (24V)
☞
A
25
Wrecked audio/
Discontinuation/
Noise only
for D-TV
Wkddi/
N
Normal
voltage?
-RF
-External Input
signal
Signal
normal?
Replace Main B/D
N
W
rec
k
e
d
au
di
o
/
Discontinuation/
Noise only
for Analog
Replace Power B/D
(When RF signal is not
received)
Rtittl
Rl MiB/D
End
Wrecked audio/
Discontinuation/
Noise only
for External Input
Connect and check
other external device
N
Normal
audio?
R
eques
t
repa
i
r
t
o ex
t
erna
l
cable/ANT provider
R
ep
l
ace
M
a
i
n
B/D
(In case of External
Input signal error)
Check and fix
End
Y
Check and fix external device
external device
11 / 97
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