LG 37LV370S Service Manual page 50

Standard Repair Process
Error
LCD TV
symptom
No response in remote controller and main unit key error
Check for 3
3 wave
wave length
length?
Y
OR
Check for 3 Check for TV operation
wave length after removing other
florescent light product
remote controller battery
Request for florescent light
replacement or attach mesh
cloth
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D. Function error
No response in remote controller,
key error, recording error, memory error
Check remote
N
controller battery
Normal?
and product
selection
N
OR
Check for
OR
external wave
length effect
Y
Normal
voltage?
N
Check and
Check and fix 3.5V
replace battery
Line of Main B/D
☞173
Reset or replace
remote controller
Established
2008. 2 . 1
date
Revised date
Y Check IR sensor
Normal
voltage (5V)
voltage?
N
Electronics 6-3
10/13
Y
Replace Analog B/D (Old)
/ Main B/D (New)
Replace PRE –AMP
Replace Key PCB
LGE Internal Use Onl