Mal-Discharge/Noise/Dark Picture - LG 50PK760N-ZC Service Manual

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

Mal-discharge/Noise/dark picture

Check CTRL ROM Ver.
and
Rom Upgrade
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
Check
Y
Normal
Y Drive B/D
Picture?
&
Replace B/D
N
Replace
N
Check Tuner
& Replace
N
1. Check Z-Sus Board
2. Replace Board
3
Making 2010. 2 . 22
Revision
Replace
Normal
Control board
Picture?
Close
N
Normal 1.Check Control B/D
Picture? 2.Replace Board
Y
Close
※Check Discharge resistance (10Ω 2~3ea)
on Power B/D before replace Y Drive B/D
N
Replace
Normal
Module
Picture?
Y
Close
전자 - 6-2
3/9
N
Replace
Module
Y
N
Normal
Picture?
Y
Close
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