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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 13VDC 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 13VDC are missing on fuses, check output feed from TV Board (CN501, pins 1-10)
5.
If 13VDC feed is present at the output of the TV Board, suspect a defective LVDS cable.
6.
If the 13VDC feed is not present, suspect a defective TV 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
<MAIN BOARD>
CN203 (POWER)
B13V_PW
B13V_PW
DGND
DGND
DGND
DGND
B18VS_PW
B18VS_PW
CN203
CN701
CNM803).
17
B18VS_PW
18
19
20
SMPS_FET_FAIL_DETECT
21
22
SW_POWER_OUT
23
A5V_PW
24
A5V_PW
CNM803
<SMPS>
Vby1
CN501
<T-CON BOARD>
DGND
DGND
DGND
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