LG
November 2017
55EG9600 (2015 OLED) Power Supply
P201 Connector Voltage Measurements
Page 06
(1): Pin 1 (P_ON) is (PWR_ON from Main: Turns on 12VM and
24VS to the Main. It does not turn on T-CON 24VD or 12VT. If
the 12VM is missing, the set will click on and then click back off.
(Shows up as 5VMNT on the Power Off Status).
(2): Pin 18 12VT_ON) is (Panel_CTL) from Main: This turns on
the T-CON 12VT, (which is T-CON 12VT P202 pin 7-12).
(3): Pin 2 (DRV_ON) is (INV_ON) from Main: This turns on the
T-CON 24VD, (which is also T-CON 24V P203 pins 8-15). This
24VD is then routed directly to the Panel.
(4): ADC (AC_DET): This pin monitors the AC input. If it is
missing the TV will not turn on. Power_Off_by_AC_DET is
registered in the Power Off Status.
(5): Pin 3 (DPC): Places the Power Supply in Power Saving
Mode when APC in the Customer’s Menu is turned On. (0V Off /
3.4V On)
For Additional Troubleshooting procedures, see
55EG9600 Power Supply Testing
P201 "SMPS Board" to "MAIN Board" P2399
Pin Label STBY Run Diode Check
24 Gnd Gnd Gnd Gnd
23 Gnd Gnd Gnd Gnd
22 24VS 0V 24.59V 0.82V
21 24VS 0V 24.59V 0.82V
20 24VS 0V 24.59V 0.82V
19 24VS 0V 24.59V 0.82V
18
(2)
12VT_ON 0V 3.52V OL
17 Gnd Gnd Gnd Gnd
16 Gnd Gnd Gnd Gnd
15 12VM 0V 11.99V 1.03V
14 12VM 0V 11.99V 1.03V
13 12VM 0V 11.99V 1.03V
12 12VM 0V 11.99V 1.03V
11 12VM 0V 11.99V 1.03V
10 Gnd Gnd Gnd Gnd
9GndGnd Gnd Gnd
8 3.5V_ST 3.56V 3.54V OL
7 3.5V_ST 3.56V 3.54V OL
6GndGnd Gnd Gnd
5 3.5V_ST 3.56V 3.54V OL
4
(4)
ACD 0V 3.32V OL
3
(5)
DPC 0V 0V/3.40V 1.20V
2
(3)
DRV-ON 0V 3.12V 1.20V
1
(1)
P-ON 0V 3.42V 1.20V
3.5V_ST Diode Checks
Connected
3.5V_ST to Main
OL (Blk on Gnd)
0.20V (Red on Gnd)
12VM Diode Checks
Connected
12VM to Main
0.36V (Blk on Gnd)
0.12V (Red on Gnd)
24VS Diode Checks
Connected
24VS to Main
0.76V (Blk on Gnd)
0.29V (Red on Gnd)
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