LG OLED55B9PUA

Picture broken / Freezing
Y
N
☞ A3
N
Check RF Signal level
Normal
Signal?
Check RF Cable
Connection
1. Reconnection
2. Install Booster
Check
S/W Version
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
- By using Digital signal level meter
- By using Diagnostics menu on OSD
(All Settings → Programmes → Programme Tuning & Settings → Manual Tuning → Antenna DTV 
Check the signal level)
- Signal Strength (Normal : over 50%)
- Signal Quality (Normal : over 50%)
Normal
Picture?
Y
Contact with signal distributor
or broadcaster (Cable or Air)
N
Normal
Picture?
Y
Close
N
☞ A4
Standard Repair Process
Established
date
Revised date
3/17
Error
symptom
3
N
Y
N
S/W Upgrade
SVC
Bulletin?
Normal
Picture?
Y
N
Y
Close
A. Video error
Check Tuner
soldering
Close
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