Read LG 50PT250-ZG / 50PT250A-ZG / 50PT250N-ZG (CHASSIS:PD13K) Service Manual online
Making
Revision
5/10
PDP TV
Symptom
A. Picture Problem
Vertical bar/ Horizontal Bar
Repair Process
Check
defect type
Y
N
Y
5
Vertical
Line/Bar
Regular
Vertical
Line / Bar
Check Module pattern
by using “TILT” key
on SVC R/C
☞A1
Normal
Pattern?
1.Check CTRL B/D
2.Replace Board
2.Replace Board
☞A13
Replace
Module
Irregular
Vertical
Line / Bar
1.Check CTRL B/D
2.Replace Board
2.Replace Board
Normal
Picture?
Check Main B/D
Replace Module
(If Main B/D doesn’t cause)
N
Y
Close
1.Connector re-connection
2.Eliminate foreign material on Connector
2.Eliminate foreign material on Connector
N
☞A13
※CTRL B/D: Control board
Check connection
of Connector
(COF,TCP)
on CTRL B/D , X B/D
Check connection
of Connector (FFC)
on Y Drive B/D
☞A20
☞A20
1.Connector re-connection
2.Eliminate foreign material on FFC
2.Eliminate foreign material on FFC
1. Check Y Drive B/D
2. Replace Board
☞A16
Normal
Picture?
N
Y
Close
Replace
Module
1.Check CTRL B/D
2.Replace Board
Normal
Picture?
N
Y
Close
N
Y
Normal
Horizontal
Line/Bar
Normal
Half
No picture
1.Check X B/D
2.Replace Board
2.Replace Board
Normal
Picture?
☞A18
Y
Close
Replace
Module
N
※ H-Line’s Cause is rare CTRL B/D
☞A19
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