Copyright © 2013 LG Electronics. Inc. All rights reserved.
Only for training and service purposes LGE Internal Use Only
A. Video error
Picture broken/ Freezing
Y
N

☞ A5

N
Check RF Signal level
Normal
Signal?
Check RF Cable
Connection
1. Reconnection
2. Install Booster
Check
S/W Version
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`
SVC
Bulletin?
Replace
Main B/D
Check
Tuner soldering
Normal
Picture?
Y
N
Y
Close
Normal
Picture?
Y Close

. By using Digital signal level meter

. By using Diagnostics menu on OSD

( Menu→ Set up→ Support → Signal Test )

- Signal strength (Normal : over 50%)

- Signal Quality (Normal: over 50%)

Normal
Picture?
Y
Contact with signal distributor
or broadcaster (Cable or Air)
N N
Normal
Picture?
Y
Close
N

☞ A6

Standard Repair Process
Established
date
Revised date 3/14
LCD TV Error
symptom 2013. 01 .09