LG 32LK610BPUA - Power Supply Testing - SMPS (Power Supply) Board Layout - EAY64548901

Oct 12, 2026

Power Supply (SMPS) testing guide for the LG 32LK610BPUA (2018) UHD LCD TV, focused on the SMPS board layout identified as EAY64548901. The material explains how to use a Simple 3V jig or a Smart TV Test Jig with a Multi-Gender Board to force SMPS power states, verify standby and running voltages, and measure LED+ / LED- and PDIM behavior. It includes two main tests (PWR_ON and DRV_ON), required external loading using a 12V bulb, and voltage ranges for backlight power and main-board inputs, plus multi-jig operational checks (OK/NG LED).

LanguageEnglish

CategoryTechnology

FormatPDF

Pages8

Reading Time20 min

AccessFree to download

SMPS Board Overview (EAY64548901)

Test jig requirements and safe setup

Power Supply Test 1: PWR_ON using 3V Simple Jig

Expected voltages and PDIM behavior

Power Supply Test 2: DRV_ON using 3V Simple Jig

Forcing backlights and verifying outputs

Multi-Gender Board & Smart TV Test Jig Procedure

OK/NG determination and voltage checks

LG 2018 UHD 720pLCD TV Training Materials 32LK610BPUA WebOS 4.0 FHD TV POWER SUPPLY TESTING Using a Simple 3VJig or Smart TV Test Jig and Multi-Gender Board Published October 09th, 2018 Power Supply (SMPS) Board Layout (EAY64548901) 32LK610BPUA (2018) Power Supply Testing P801 To Backlights To Main Board P2300 P201 SK100 AC In October 2018 Page 01 LG 32LK610BPUA SMPS (Power Supply) Drawing 32LK610BPUA (2018) Power Supply Testing P801 To Panel Backlight Power pin 7. P801 Pin 1 goes to Backlight Driver Q801 (Back ofSMPS) SMPS P/N: EAY64548901 Note: The Smart Test Jig and Multi-Gender Board“Can”be used in this model for testing. Use Port P16. 13.2V Line does not have to be loaded in this case, LED- (95 .8V) 50% LED+ (118 .5V) 50% P801 "SMPS Board" To "LED Backlights" To Backlight LEDs 78V (116V) (91V) P204 P203 P202 P802 Jig Switch set to 24V / LCD Power (See Article 9627). 7.83V (13.20V) 7.83V (13.20V) 7.83V (13.20V) 60.42V (90V) Voltages below for Backlight Power (LED+) are with Main disconnected and using Simple 3V Jig to supply turn-on commands on-at-a-time. (Special Note: 13.2V Line “Must”be loaded using a 12V light Bulb when using the 3V Simple Jig). (1) PWR-On Pin 1: Turns on 13.2V to the Main. No backlights at this time. Backlight Power is 114.6V. (2) MS (DRV_On) Pin 11: Turns on the Backlights. Backlight power goes to 119.3V. Voltages given below for PDIM are with Main connected and receiving normal Digital Antenna Signal. (3) PDIM Pin 12: Will vary according to incoming video IRE level and OSD Backlight setting Output from the Video Processor. And the Backlight settings in the Customer’s Menu 0% TO 100% . It is then routed out P1001 to P201 and sent to the LED Driver IC on the Back of the SMPS. The Range is: Dim 0. 17V ~ Bright 3.28V. (1 .76V at 50%) PDIM is actually a 3.44V p/p pulse (PWM Control) . P201 "SMPS Board" To P2300 "MAIN Board" PIN LABEL STBY RUN Diode | | | | | | | --- | --- | --- | --- | --- | | (3) 12 | P-DIM | 0V | *0.16V-3.18V | OL | | | | | | | | 9-10 | Gnd | Gnd | Gnd | Gnd | | | | | | | | | | | | | | | | | | | | | | | | | (2) 11 4-8 3 2 (1) 1 MS (Drv_On) 13.2V Gnd N/C PWR_ON 0V 7.83VGnd n/c 0V 1.97V 13.10VGnd n/c 3.35V *Dim to Bright OL OL Gnd n/c 1.20V MAIN 12 11 9-10 8-4 3 2 1 VOLTAGE LABEL MODEL LGP32D-17F1 13.2V = 1.8A PIN LABEL RUN 1 LED- 3 N/C 5 N/C 7 LED+ 110.4V~89V OL AC 1st applied 168V (30sec) then fall to 76V During Stand-By LED+ will fluctuate 76V Main Board Disconnected: 69V Backlight Setting Dim 0% to Bright 100% Pins 2-6 are not connection. Direct Lit Backlights (8 LEDs on 1 Array Strip) In Out Dim to Bright Note: P201 still inserted. P2300 removed. Use P2300 side to insert needles from the Jig. Note: STBY 7 .83V (Pins 4-8) Must be present when AC is applied before beginning test which indicates Standby voltage is OK. P201 Test Set Up Test 2 11 3 1 12 2 3V SIMPLE JIG: Made from 2 (AA) batteries. Jump + to – on one side. On the other side, solder two red wires (needle tipped) to the + and one black wire (needle tipped) to the – side. See Article 8979 Note: For Ground you can use Panel Back. SMPS TEST: Forcing SMPS On. This test requires simple 3V jig. See below or Multi-Gender Board, use Port P16 (12pin), See Article 9627. Using 3V Simple Jig: Remove AC Power. Disconnect P2300 on Main Board. Test 1: Using a 3V jig, Jump 3V to pin 1 (PWR_ON) . Apply AC Power. (No Backlights in Test 1)(Pins 4-8) rises to 13. 13V. Backlight Power LED+ 114.8V. LED-95.6V. PDIM will be 3.42V. Remove AC Power. LED+ LED P801 Special Note: The 13.2V Line “Must” be loaded using a 12V light Bulb when using the 3V Simple Jig) . Test 2: Using a 3V jig, Jump 3V to pin 11 (DRV_ON) . Place a 12V Light Bulb on 13.2V to Gnd. Apply AC Power. All Voltages should be produced

FAQs

What tools are required to test the LG 32LK610BPUA SMPS board?

Use a Simple 3V jig made from 2 AA batteries, or use a Smart TV Test Jig with a Multi-Gender Board connected via the P16 (12-pin) port. The guide also references using a 12V light bulb for required loading on the 13.2V line.

How do you perform SMPS Test 1 (PWR_ON) with the 3V Simple Jig?

Remove AC power, disconnect P2300 from the main board, then use the 3V jig to jump 3V to pin 1 (PWR_ON). Apply AC power to verify standby rise and check that backlights remain off in Test 1, then remove AC power.

How is SMPS Test 2 (DRV_ON) different and what should be verified?

In Test 2, jump 3V to pin 11 (DRV_ON), place a 12V light bulb on 13.2V to GND, then apply AC power. Verify that required voltages are produced for the main and backlight lines and confirm backlights come on, including PDIM voltage/pulse behavior.

What is the Multi-Gender Board & Smart TV Test Jig workflow and how do you judge OK/NG?

Disconnect the main-board 12-pin power cable connector, connect it to the Multi Gender Jig (P16 port), set the Smart Jig product switch to LCD and the LCD model switch to 24V, then apply power. When the OK LED turns on, the power board is normal; when the NG LED turns on, the power board can be judged defective.

Oct 12, 2026

Upload by Pentious