LG 42LB4D Troubleshooting Manual page 7

Power Supply trouble shooting
Power Supply Ballast Connectors
With Test unit measurements
BALLAST / INVERTER
P204 Label
1 VBL - +24.12VDC
2 VBL - +24.12VDC
3 VBL - +24.12VDC
4 VBL - +24.12VDC
5 VBL - +24.12VDC
6 GND
7 GND
8 GND
9 GND
10 GND
11 ADIM - 3.2Vdc
12 Von/Off - 3.2Vdc
13 VBR- +2.7Vdc
LCD TV - 2007
Standby Run Mode
0V 23.93V
0V 23.93V
BALLAST / INVERTER
0V 23.93V
P205
0V 23.93V
1
0V 23.93V
2
0V 0V
3
0V 0V
4
0V 0V
5
0V 0V
6
0V 0V
7
0V 3.27V
8
0V 3.23V
9
0V 2.75V
10
11
12
Label Standby RUN mode
VBL - +24.12VDC 0V
VBL - +24.12VDC 0V
VBL - +24.12VDC 0V
VBL - +24.12VDC 0V
VBL - +24.12VDC 0V
GND 0V
GND 0V
GND 0V
GND 0V
GND 0V
ADIM - 3.2Vdc 0V
Von/Off - 3.2Vdc 0V
23.93V
23.93V
23.93V
23.93V
23.93V
0V
0V
0V
0V
0V
3.27V
3.23V