LG 32LB520B Service Manual page 32

Standard Repair Process
Error
LED TV
symptom
☞ A5
Check RF Signal level
Check whether other equipments have problem or not.
Y
Normal
(By connecting RF Cable at other equipment)
Signal
→ DVD Player ,Set-Top-Box, Different maker TV etc`
N
Check RF Cable
Connection
1. Reconnection
2. Install Booster
Normal
N
Picture
Y
End
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A. Video error
Picture broken/ Freezing
. By using Digital signal level meter
. By using Diagnostics menu on OSD
( (MENU-CHANNEL-MANUAL TUNING) Signal quality: Normal:over 50%))
Normal
Y
Picture
N
Contact with signal distributor
or broadcaster (Cable or Air)
☞ A6
SVC
Check
S/W Version
Bulletin
Y
S/W Upgrade
Normal
N
Picture
Y
End
Established
2014. 07.07
date
Revised date
N
Check tuner power
supply or soldering
3/14
Normal
Y
End
Picture
N
change