4-2-7. T-CON Board
Major check points
Check TV Board Connector Voltages from SMPS (switched voltages on
1.
CNM803
).
Test for 13VDC at both sides of both fuses on the TCON Board.
2.
If either one of the fuses is open, replace the T-CON Board .
3.
If 13VDC are missing on fuses, check output feed from TV Board (CN501, pins 1-10)
4.
If 13VDC feed is present at the output of the TV Board, suspect a defective LVDS cable.
5.
If the 13VDC feed is not present, suspect a defective TV Board or SMPS.
6.
CN203 (POWER)
1
DGND
9
B13V_PW
17
B18VS_PW
2
DGND
10
B13V_PW
18
DGND
3
B13V_PW
11
DGND
19
DGND
4
DGND
12
DGND
20
SMPS_FET_FAIL_DETECT
5
B13V_PW
13
DGND
21
DGND
6
B13V_PW
14
DGND
22
SW_POWER_OUT
7
B13V_PW
15
B18VS_PW
23
A5V_PW
8
B13V_PW
16
B18VS_PW
24
A5V_PW
CN203
CNM803
CN501
Vby1
CN701
<MAIN BOARD>
<T-CON BOARD>
<SMPS>
CNM803 from SMPS
4-12
4. Troubleshooting