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4. Troubleshooting
4-2-7. T-CON Board
Major check points
1.
Check TV Board Connector Voltages from SMPS (switched voltages on
2.
Test for 12VDC at both sides of both fuses on the TCON Board.
3.
If either one of the fuses is open, replace the T-CON Board .
4.
If 12VDC are missing on fuses, check output feed from SMPS (CN12V, pins 1-7).
5.
If 12VDC feed is present at the output of the SMPS, suspect a defective LVDS cable.
6.
If the 12VDC feed is not present, suspect a defective TV Board, FRC Board or SMPS.
1
2
3
B13V_PW
4
5
B13V_PW
6
B13V_PW
7
B13V_PW
8
B13V_PW
4-12
DGND
9
DGND
10
11
DGND
12
13
14
15
16
CNM803 from SMPS
CN203
<MAIN BOARD>
Vby1
U2
<T-CON BOARD>
CNM803).
CN203 (POWER)
B13V_PW
B13V_PW
DGND
DGND
DGND
DGND
B18VS_PW
B18VS_PW
<FRC BOARD>
CN701
CN400_MAIN
Vby1
U1
CON_12V
17
B18VS_PW
18
DGND
19
DGND
20
SMPS_FET_FAIL_DETECT
21
DGND
22
SW_POWER_OUT
23
A5V_PW
24
A5V_PW
CNM803
CN801S
<SMPS>
CON_12V
1
VINI_12V_PW
9
2
VINI_12V_PW 10
3
VINI_12V_PW 11
4
VINI_12V_PW 12
5
VINI_12V_PW 13
6
VINI_12V_PW 14
7
VINI_12V_PW 15
8
N.C
GND
GND
GND
GND
GND
GND
GND
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