LG LS5750 Series Service Manual

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→ abnormal audio/discontinuation/noise is same after “Check input signal” compared to No audio
C. Audio error
Wrecked audio/ discontinuation/noise
Wrecked audio/
Discontinuation/
Noise for
all audio
Check and replace
speaker and
connector
Wrecked audio/
Discontinuation/
Noise only
for D-TV
Wrecked audio/
Discontinuation/
Noise only
for Analog
Wrecked audio/
Discontinuation/
Noise only
for External Input
Connect and check
other external device
N
Y
Normal
audio?
Check and fix external device
Replace Power B/D
N
Y
Normal
voltage?
Check input
signal
-RF
-External Input
signal
Signal
normal?
(When RF signal is not
received)
Request repair to external
cable/ANT provider
Y
Check audio
B+ Voltage (24V)
Replace Main B/D
(In case of External
Input signal error)
Check and fix
external device
Replace Main B/D
N
End
Established
date
Revised date
9/13
LCD TV
Error
symptom
Standard Repair Process
☞A25
2010. 12 .14
Copyright ⓒ 2012 LG Electronics. Inc. All right reserved.
Only for training and service purposes
LGE Internal Use Only

LG LS5750 Series Specifications

General

Brand	LG
Model	LS5750 Series
Category	LCD TV
Language	English