Wrecked Audio/ Discontinuation/Noise - LG 32LN52 Series Service Manual

Standard Repair Process
Error
LCD TV
symptom
- abnormal audio/discontinuation/noise is same after "Check input signal" compared to No audio
Check input
signal
Signal
-RF
normal?
-External Input
signal
N
Copyright © 2013 LG Electronics. Inc. All rights reserved.
Only for training and service purposes
C. Audio error

Wrecked audio/ discontinuation/noise

Y
(When RF signal is not
received)
Request repair to external
cable/ANT provider
☞A7
(In case of
External Input
signal error)
Check and fix
external device
Established
Revised date
Wrecked audio/
Check and replace
Discontinuation/
speaker and
Noise for
connector
all audio
Wrecked audio/
Discontinuation/
Replace Main B/D
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
10 / 36
2013. 01 .09
date
☞A4
Check DC24V
From Adapter
Y
Normal
voltage?
N
Replace Adapter
Replace Main B/D
N
Normal
audio?
Y
Check and fix external device
10/14
End
LGE Internal Use Only