LG 23MA73D - User Manual

Other manuals for LG 23MA73D

Service Manual37 pages

Questions and Answers

E
Erica MartinezAug 16, 2025
What to do if my LG LED TV has no power?
- A
  Albert HarrisAug 16, 2025
  If your LG LED TV has no power, begin by inspecting the L800 and the power connector. Replace the adapter if the voltage level (19V) is not correct. Also, check the output of IC809 and replace it if the voltage level (3.3V_ST) is incorrect. Similarly, examine the output of IC802, IC806, IC810 and IC807, replacing them if their respective voltage levels (5V, 1.15V, 2.5V and 1.5V) are not correct. Finally, check the X201 clock and replace it with a 24MHz component if necessary. As a last resort, replace the IC100 flash memory.
V
Valerie WilliamsAug 18, 2025
What to do if my LG 23MA73D LED TV has no picture?
- M
  melissacarterAug 19, 2025
  If your LG LED TV shows no picture, start by checking if WLED_ENABLE is high. If not, check if IC101 has back light on and consider replacing the Main Scaler IC (R1127). Next, check the LED Driver output and the LED Driver IC1100 (P1101/P1102 #1,2,5,6), replacing the LED Driver IC if necessary. Also, verify the panel power at P1002(#1,2,3) for 5V and replace IC807 if its output is not 5V. Check the panel clock at IC101 P601(#10,11,22,23) and repair the Main B/D if needed. Inspect the FFC cable for damage and replace it if there are open conductors. If the issue persists, consider replacing the T-con Board or module.
R
Roger BlackburnAug 21, 2025
Why does my LG LED TV have no audio?
- C
  Cynthia RuizAug 22, 2025
  If your LG LED TV has no audio, first check the voltage level at L800 (19V) and then inspect the Audio Amp(IC700) power (19V, 3.3V). Check the signal from IC700 at L700, L701, L706, L709. Also, check the speaker and its wire connection (P700), and replace the connector or speaker, checking the resistance. Verify the signal from IC101 SDA/SCL (R703/R214, R707/R213). If problems persist, replace IC809(3.3V) or the adapter, or consider replacing IC700 or IC101.
C
Charlene RossAug 26, 2025
Why is there no video on my LG 23MA73D via HDMI?
- M
  Mark TateAug 26, 2025
  If your LG LED TV has no video via HDMI, first check if the input signal format is supported. Then, check the HDMI cable for damage or an open connector. Next, check JK500/JK501. Also, check the I2C signal at JK500/JK501 and re-download the EDID data (#15, #16). Finally, replace the scaler(IC101) and check the HDCP key (IC101).
M
Ms. Kelly ChapmanAug 27, 2025
Why does my LG 23MA73D turn off suddenly?
- M
  Michael GarciaAug 28, 2025
  If your LG LED TV turns off suddenly, examine the power control settings to ensure the power supply isn't being interrupted. Also, check the Time settings to see if the Auto sleep feature is enabled. If the TV is on but receives no signal, it will automatically turn off after 15 minutes of inactivity.
L
Laura VegaAug 31, 2025
How to fix LG 23MA73D LED TV remote control not working?
- B
  Brandon YangAug 31, 2025
  If you cannot control your LG LED TV with the remote, begin by checking the remote control sensor on the TV and try again. Ensure there are no obstructions between the remote and the TV. Finally, verify that the batteries in the remote are working and correctly installed.
T
Tracy MooreSep 3, 2025
What to do if LG LED TV remote control not working?
- J
  Jodi HaynesSep 3, 2025
  If you can't control your LG LED TV with the remote, start by checking the remote control sensor on the TV and try again. Ensure there are no obstructions between the remote and the TV. Also, verify that the batteries in the remote are working and correctly installed.
A
April WilliamsSep 6, 2025
What to do if my LG 23MA73D has no image and no sound?
- M
  Mark MirandaSep 6, 2025
  If your LG LED TV shows no image and produces no sound, ensure that the TV is turned on. Check whether the power cord is properly connected to a functioning wall outlet. To verify the outlet's functionality, connect other products to it.
D
Danielle DiazSep 9, 2025
What to do if my LG LED TV has no video via component?
- H
  Holly GibsonSep 9, 2025
  If your LG LED TV shows no video when using a component connection, first check if the input signal format is supported. Then, check the component cable for any damage. If the problem persists, replace JK2800 or check JK2800 and the connected device. You may also need to check the signal and replace R237, R239, R241 and C218, C220, C222. A problem with IC101 could also be the cause.
B
beth80Sep 12, 2025
What to do if my LG LED TV has no video via RGB?
- M
  mariathomasSep 12, 2025
  If your LG LED TV shows no video via RGB, first check if the input signal format is supported. Then, check the RGB cable. If the problem continues, replace JK400 or check JK400 and the connected device. Also, check Hsync and Vsync, and replace R266, R267. Check the signal RGB and replace R228, R230, R232 and C204, C206, C208. A problem with IC101 could also be the cause.

Summary

Installation Procedure

Initial Setup Steps

Steps for unpacking, attaching stand, and connecting external devices.

Assembling and Preparing

Attaching the TV Stand

Step-by-step instructions for securely attaching the TV stand.

Table Mounting and Ventilation

Procedures for placing the TV on a table and ensuring proper ventilation.

Wall Mounting Specifications

Guidelines and VESA standards for mounting the TV on a wall.

Watching TV

First-Time TV Setup and Configuration

Guide for initial TV setup and customizing basic preferences.

Making Connections

Connecting AV Devices

PC Display and Audio Connections

Connecting a PC to the TV using HDMI, DVI, or RGB interfaces.

Remote Control

Remote Control Button Functions

Customizing Settings

Accessing and Navigating TV Menus

Troubleshooting

General Problem Resolution

Common TV operational issues and their recommended solutions.

LG 23MA73D Specifications

General

Screen Size	23 inches
Display Type	LED
Resolution	1920 x 1080
Aspect Ratio	16:9
HDMI Ports	2
USB Ports	1
Brightness	250 cd/m²
Contrast Ratio	5, 000, 000:1
Response Time	5 ms
Weight	3.5 kg
Speakers	5W x 2
Input Ports	Component, Composite
Viewing Angle	178/178
Power Consumption	28W (Typical)