Mal-Discharge/Noise/Dark Picture - LG 50PW450 Service Manual

Repair Process
PDP TV
Symptom
Check
Picture problem
Type
Dot
type
☞A14
Mal-discharge
Scan
Type
Check RF Cable
Picture Noise
Connection
Picture mode
Dark Picture
setting
A. Picture Problem

Mal-discharge/Noise/dark picture

☞A15
Check CTRL ROM Ver.
and
Rom Upgrade
☞A5
Check voltage
. –V / V
Y SC
(Y-Sus B/D)
Y-Sus B/D
Normal
Picture?
Y
Close
Check
Normal
Picture?
Y
Close
N
Normal
Picture?
Y
Close
☞A16
Check
Y
Normal
Y Drive B/D
Picture?
&
Replace B/D
N
Replace
☞A6-1, 2
N
Check Tuner
& Replace
☞A9
N
1. Check Z-Sus Board
2. Replace Board
3
Making 2010. 11. 16
Revision
Replace
Normal
Control board
Picture?
Y
Close
☞A13
N
Normal 1.Check Control B/D
Picture? 2.Replace Board
Y
Close
N
Replace
Normal
Module
Picture?
Y
Close
ⓒ LG Electronics. Inc.2010
전자 - 6-2
3/10
N
Replace
Module
N
Normal
Picture?
Y
Close