50PZ570G-ZB, 50PZ570S-ZB, 50PZ575S-ZB (CHASSIS:PD12C) - LG TV Service Manual (repair manual). Page 72

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Making 
Revision 
PDP TV
Symptom
A. Picture Problem
Defect type cause by PDP Module
Repair Process-Reference data
A19
Symptom picture
defects description
To action
Regular vertical lines
1. Check connection
(CTRL B/D, X B/D)
2. Check CTRL B/D
3. Replace CTRL B/D
Vertical lines or Bar
1. Check connection
(CTRL B/D, X B/D)
2. Check CTRL B/D
3. Replace CTRL B/D
Many irregular vertical lines
1. Check connection
(CTRL B/D, X B/D)
2. Check CTRL B/D
3. Replace CTRL B/D
Horizontal Line or Bar
1. Check connection
(Y-Sus B/D Panel)
2. Check Y-Sus B/D
3. Replace Y-Sus B/D
First of all, Check whether all of cable between board was inserted properly or not.
Next, Check whether there is foreign material on connector.
A19
2010. 12 . 24
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