3In1/Panel Backlight Test - Samsung UN43TU7000F Service Manual

4-2. 3IN1/Panel Backlight Test

1. Find LED+/LED- TP point in 3in1 board.
2. Check LED voltage spec in 3in1 board.
3. Using Multi-meter, measurement LED+/LED- TP Point.
4. If Voltage is abnormal, replace 3in1 board.
5. If Voltage is normal, replace panel.
CNL801 (LED Connector)
1 N.C
2 N.C
3 N.C
4 N.C
5 2-
6 2+
7 1-
8 1+
9 N.C
10 N.C
11 N.C
12 N.C
4. Troubleshooting
*Only 55 inches
CNL801
LED Connector
4-3