DOWNLOAD LG 42PT250-TA (CHASSIS:PA11K) Service Manual ↓ Size: 10.54 MB | Pages: 36 in PDF or view online for FREE

Model
42PT250-TA (CHASSIS:PA11K)
Pages
36
Size
10.54 MB
Type
PDF
Document
Service Manual
Brand
Device
TV / Plasma
File
42pt250-ta-chassis-pa11k.pdf
Date
PREV: LG 42PT250R-TA (CHASSIS:PP11K) Service Manual

LG 42PT250-TA (CHASSIS:PA11K) Service Manual ▷ View online

Making 
- 6-2
Revision 
A16
PDP TV
Symptom
A. Picture Problem
Y Drive B/D Checking method(50R1)
Repair Process-Reference data
A16
▣
Y drive board
※ Check all output pins of scan IC (connector) using DMM.
Input signal connector
Scan IC
※ DMM (Digital Multi-Meter)
2010. 11. 16
Making 
- 6-2
Revision 
PDP TV
Symptom
A. Picture Problem
(Half picture) X- B/D Checking method(50R1)
Repair Process-Reference data
A18
A18
▣
Half / partly display (or abnormal display)
※ Check connections (TCP - X board, CTRL board - X board)
-. Check Va input voltage.
(P121, P120, P220, P221, P320 : Power connector of the X board)
-. Check cables between CTRL board and X board.
-. Replace the X B/D.
-. Check TCP connection after X B/D replacement. 
▣
Connections between panel and X B/D
-. Right display (Picture 1.) ↔ Check/replace right  X B/D
-. Both ends display (Picture 2.) ↔ Check/replace center X B/D 
-. Left display (Picture 3.) ↔ Check/replace left X B/D
Picture 1.
Picture 2.
Picture 3.
Half 
display
(abnormal)
Partly 
display
(abnormal)
abnormal
abnormal
Va
Va
Va
from CTRL
from CTRL
from CTRL
2010. 11. 16
Making 
- 6-2
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. 11. 16
Making 
- 6-2
Revision 
PDP TV
Symptom
A. Picture Problem
Connector Type on PDP Module
Repair Process-Reference data
A20
96 Out Put
COF Type
1. Check foreign & Connection status
2. Check bad soldering 
on Chip resistance
▣ Defect symptom 
192 Out Put
TCP Type
TCP (Tape Carrier Package) is film
for IC connect with Electrode pattern
(Direct Bonding) on X B/D
FFC Type
Connector to connect between
Electrode PAD Of PANEL and
Y Drive B/D,Z-Sus B/D
A20
2010. 11. 16
Page of 36
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