To Next PageTo Next PageWhat to do if LG 43UJ65 LED TV has no video and no audio?
If your LG LED TV has no video and no audio, check the voltage of the Power Board (13V). If that doesn't solve the problem, replace the Power Board and repair its parts.
What to do if picture is broken or freezing on LG 43UJ65?
If your LG LED TV picture is broken or freezing, first, check the RF signal level and cable connection. If the issue persists, try a software upgrade. If problems continue, contact your signal distributor or broadcaster, or consider replacing the Main Board.
How to fix LG LED TV when there is no video but normal audio?
If your LG LED TV shows no video but the audio is normal, ensure all cables between the boards are properly inserted. If the problem continues, consider replacing the T-con/Main Board or module. Alternatively, repair the Power Board or its parts, or replace the Inverter.
How to troubleshoot color error on LG 43UJ65?
If you are experiencing color errors on your LG LED TV, check the color by input and replace the main board if necessary. You might also need to replace the module. If you are using an external device, request a repair for the external device or cable.
General| Screen Size | 43 inches |
|---|---|
| Display Type | LED |
| HDR Support | HDR10, HLG |
| Refresh Rate | 60 Hz |
| Smart TV Platform | webOS |
| Wi-Fi | Yes |
| HDMI Ports | 3 |
| USB Ports | 2 |
| Speaker System | 2.0 Channel |
| Audio Output Power | 20 W |
| Processor | Quad Core Processor |
| Ethernet | Yes |
| Bluetooth | Yes |
| Resolution | 3840 x 2160 pixels |
| Audio Output | Optical Digital Audio Output |
Crucial safety information regarding component replacement and preventing hazards.
Guidelines for safe practices, including using isolation transformers and handling high voltage.
Procedures for performing cold and hot checks to ensure electrical safety.
Essential precautions for component handling, testing, and cleaning during servicing.
Techniques to prevent damage to sensitive electronic components from static electricity.
Guidelines for proper soldering techniques, including iron temperature and solder type.
Defines the scope of the technical specifications for the TV model.
Outlines the conditions and parameters for testing TV performance and compliance.
Details the procedures and standards used for evaluating TV performance.
Provides general specifications, supported markets, and country-specific DTV standards.
Lists supported analog and digital broadcasting systems, including DVB standards.
Details TV program reception capabilities and the analog/digital receiving system specifications.
Specifies the required input voltage and frequency for the television.
Details supported input formats for 2D video signals via Component and HDMI (PC).
Lists supported input formats for DTV signals via HDMI, including resolutions and refresh rates.
Specifies supported input formats for 3D content across DTV, HDMI, and USB.
Instructions for updating the TV's software using a USB flash drive.
Procedure for updating the TV's software via a network connection.
Illustrates the external connections and main components of the K3Lp chassis.
Details the internal architecture and functional blocks of the K3Lp System-on-Chip.
Shows the signal flow and connections for the EPI and CEDS interfaces.
Step-by-step instructions for safely removing the television's stand.
Guidance on removing screws to detach the TV's back cover.
Steps for removing screws securing internal components after back cover removal.
Instructions for removing the bottom cover and the Wi-Fi module.
Procedure for safely removing the infrared receiver (IR) module.
Troubleshooting steps for various video issues like no video, picture distortion, color problems, and artifacts.
Addresses issues related to the TV not powering on, intermittent power, or unexpected shutdowns.
Guides for resolving audio problems, including no sound, distorted audio, or noise.
Troubleshooting for remote control, Wi-Fi, camera, and external device connectivity problems.
Methods for identifying and fixing circuit noise or mechanical noise issues in the TV.
Procedures for addressing physical damage to the TV's casing, stand, or remote control.
Troubleshooting for no video with normal audio, focusing on LCD backlight check.
Procedure for checking and adjusting the white balance settings for optimal color accuracy.
Steps to check tuner input signal strength and quality for video issues.
Guide on how to check the TV's software (S/W) version for troubleshooting.
Procedures for checking the tuner component and its related connections for video errors.
Illustrates connections related to external inputs for diagnosing screen condition issues.
Instructions for checking and ensuring proper contact of the link cable (FFC) for color errors.
Checks the front power indicator and basic functions for no power issues.
Verifies input voltage and ST-BY 3.5V, referencing specific power board connectors.
How to check the power off mode status via the IN START menu for troubleshooting.
Steps to check sound output settings in the TV menu when there is no audio.
Procedure for checking voltage and speaker connections for audio issues.
Steps to check IR cable condition, standby voltage, and IR LED output for remote issues.
How to check the BT/Wi-Fi cable condition and 3.5V on the terminal for connectivity issues.
Guide on accessing the service menu using the remote control and entering passwords.
Explains the functions of various buttons on the service remote control.
Details the functions of additional remote control buttons like B-TOOTH, IN-START, and X-STUDIO.
Steps to check Model Number D/L and White Balance after main board replacement.
How to use the adjustment test patterns via the service remote control.
Examples of image errors caused by faulty or poorly connected FFC cables.
Examples of image symptoms related to LVDS cable connection problems or screen stops.
Examples of screen noise and picture problems attributed to the main board or its ICs.
Examples of screen spread, blurry pictures, and color spread issues from the main board.
Examples of broken pictures, right-side screen issues, and LG logo screen problems.
Examples of image errors caused by isometric bars or foreign matter within the module.
Examples of image breakage due to external impact or bending of the module.
Examples of vertical bars and screen darkness caused by module or BLU defects.
Examples of screen image breakage attributed to a defective T-Con board.
Examples of image breakage due to T-Con cable issues or screen darkness.
Visual examples of symptoms indicating the need to exchange the Power Board (PSU).
Method for diagnosing 15Y OLED power boards, including voltage checks and JIG connection.
Continues diagnostic procedures for 15Y OLED power boards, focusing on LED indicators.
Diagnostic procedures for 16Y OLED power boards, covering voltage checks and LED indicators.
Diagnostic procedures for 17Y OLED power boards, covering voltage checks and LED indicators.
Diagnostic procedures for 16Y/17Y LED power boards, covering voltage checks and JIG connection.
