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Repair Process
PDP TV
Check
Picture problem
Type
☞A14
Mal-discharge
Picture Noise
Dark Picture
Copyright ⓒ 2009 LG Electronics. Inc. All right reserved.
Only for training and service purposes
A. Picture Problem
Symptom
Mal-discharge/Noise/dark picture
☞A15
Check CTRL ROM Ver.
Dot
and
type
Rom Upgrade
☞A5~A6
Check voltage
Scan
. –V
/ V
Y
SC
Type
(Y-Sus B/D)
Check RF Cable
Normal
Connection
Picture?
Y
Close
Check
Normal
Picture mode
Picture?
setting
Y
Close
N
Normal
Picture?
Y
Close
☞A16
Check
Y
Normal
Y Drive B/D
Picture?
&
Replace B/D
N
Replace
☞A17
Y-Sus B/D
※Check Discharge resistance (10Ω 2~3ea)
N
Check Tuner
& Replace
☞A9
,A11
(42G2)
(50G2)
N
1. Check Z-Sus Board
2. Replace Board
3
Making
2009. 2 . 1
Revision
Replace
Normal
Control board
Picture?
Y
Close
☞A13
N
Normal
1.Check Control B/D
Picture?
2.Replace Board
Y
Close
on Power B/D before replace Y Drive B/D
N
Replace
Normal
Module
Picture?
Y
Close
3/9
N
Replace
Module
N
Normal
Picture?
Y
Close
LGE Internal Use Only
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