Y
N
☞
A5
N
Check RF Cable
Connection
1. Reconnection
2. Install Booster
S/W Upgrade
Check whether other equipments have problem or not.
(By connecting RF Cable at other equipment)
→ DVD Player ,Set-Top-Box, Different maker TV etc`
Replace
Main B/D
Check
Tuner soldering
Y
N
Y
Y
. By using Digital signal level meter
. By using Diagnostics Setting on OSD
( Setting → Customer Support(red button on remote control) → Signal Test )
- Signal strength (Normal : over 50%)
- Signal quality (Normal : over 50%)
Y
Contact with signal distributor
or broadcaster (Cable or Air)
N
N
Y
N
☞
A6
End
Normal
Signal
Normal
Picture
Normal
Picture
Normal
Picture
SVC
Bulletin
End
End
Normal
Picture
Error Symptom
A. Video Error
Established date
3/13
Content
Tuning fail, Picture broken/freezing
Revised date
Standard Repair Process
Copyright © 2019 LG Electronics. Inc. All rights reserved.
Only for training and service purposes.
Summary of Contents for 24LM520S
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