LG 42PJ260R Service Manual page 25

Repair Process
PDP TV
Symptom
. By using signal level meter
Check RF Signal level - Signal strength (Normal : over 50%)
- Signal Quality
Y
Check whether other equipments have problem or not.
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
N
Normal
Picture?
Y
Close
A. Picture Problem
Picture broken/Freezing
(Normal: over 50%)
Y
Normal Check
Picture? S/W Version
N
Contact with signal distributor
or broadcaster (Cable or Air)
Making
Revision
SVC
Bulletin?
Y
S/W Upgrade
N
Normal
Picture?
Y
Close
4
Y
Normal
Close
Picture?
N
Check
Tuner soldering
Replace
Main B/D
ⓒ LG Electronics. Inc.2009