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4. Troubleshooting
Main Ass'y (CN204_L, CN203_S)
13
B13V
11
B13V
9
B13VS
7
B13VS
5
GND
3
B5.3V
1
B5.3V
* Change the 12 PIN to B13V(2012) from NC(2011)
3.
Check the power in & output between IP & Main Board, Main Board & Panel, IP & Panel.
How to know it is from Main Board or T-Con when some problems happen
„
1.
No Picture : Backlight is on, but there is no picture and LED indicator in front of TV is blinking.
Check the LVDS Cable connection. If still problems, change the T-Con Board and then Main Board step by step.
-
2.
Picture distortion : Enter the service mode
Enter 'Service Mode.'
-
•
If you do not have Factory remote control
Power OFF
•
If you have Factory remote control
INFO
3.
Choose 'SVC.'
4.
Choose 'Test pattern.'
5.
Select the each pattern and then check all pattern is ok or not.
Option
Control
SVC
Expert
ADC/WB
Advanced
Pattern Status is
OK
NG
4-2
14
B13V
14
12
B13V
12
10
SW_INV
10
8
GND
6
GND
4
A5.3V
2
SW_PW
⇢ Choose 'SVC' ⇢ Check the 'internal pattern.'
MUTE
1
Factory
Test Pattern
Change the
Main Board
Panel and T-Con Board
Power Ass'y (CMN801)
B13V
13
B13V
11
SW_INV
9
8
GND
7
6
GND
5
4
A5.3V
3
2
SW_PW
1
8
2
Mstar Test Pattern
B13V
B13V
B13VS
B13VS
GND
B5.3V
B5.3V
Power On
Test Pattern is made by the MSTAR IC
We guess front of MSTAR IC has problem.
We guess back of MSATR IC has problem.
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