Is your LG TV screen flickering, flashing, or jumping up and down? You’re not alone in facing this problem, as it’s a common concern among LG TV owners.

Understanding these causes and knowing how to address them is important to restoring your TV’s performance and ensuring a seamless entertainment experience.

Try These Simple Fixes First

When your LG TV screen starts flickering, there are several quick fixes you can try before considering more advanced solutions. These methods are easy to implement and often resolve the issue without the need for professional help.

1. Power Cycling

Power cycling is a simple yet effective method to resolve many TV issues, including screen flickering:

1. Turn off your LG TV.

2. Unplug the TV from the wall outlet.

3. Wait for 30-60 seconds (some experts recommend waiting up to 30 minutes for a full discharge)

4. While unplugged, press and hold the TV’s physical power button for 15 seconds to drain any residual power.

5. Plug the TV back in and turn it on.

This process can clear temporary glitches in the TV’s memory that might be causing the flickering issue.

2. HDMI Cable Inspection

Faulty or loose HDMI connections can often cause screen flickering:

1.Check all HDMI cables connected to your TV for any visible damage.

2. Ensure all HDMI cables are securely plugged into both the TV and the source devices.

3. Try unplugging and reconnecting each HDMI cable.

4. If possible, test with different HDMI cables or ports to isolate the issue1.

Disabling Energy Saving Features

Energy-saving modes can sometimes cause screen flickering:

1. Press the Settings button on your remote.

2. Navigate to All Settings > Support > Energy Saving.

3. Toggle the Energy Saving mode to Off

Additionally, you can adjust other picture settings that might affect screen stability:

4. Go to Settings > All Settings > Picture.

5. Experiment with different Picture Modes.

6. Adjust Panel Brightness and Gamma settings to see if it reduces flickering.

Advanced Solution for LG TV Flickering Issue

If quick fixes haven’t resolved your LG TV flickering issue, adjusting the picture settings can often provide a solution. Incorrect display configurations or overly aggressive energy-saving features are common culprits behind screen instability. Follow these steps to optimize your TV’s picture settings:

1. Adjust Picture Settings 

I. Modify Picture Modes

LG TVs come with various preset picture modes, each tailored to specific viewing environments. Flickering may be caused by a mode that doesn’t align with your current setup. To adjust:

  • Press the Settings button on your remote.
  • Navigate to All Settings > Picture > Picture Mode.
  • Experiment with different modes, such as Standard, Cinema, or Game Mode, to find one that eliminates flickering.

II. Adjust Brightness

Brightness settings can influence screen stability, especially in dimly lit rooms or high-contrast scenes. To fine-tune these settings:

  • Go to Settings > All Settings > Picture > Advanced Settings.
  • Locate Brightness adjustments.
  • Gradually increase or decrease these values while observing the screen for flickering improvements.

2. Disable Energy Saving Features

Energy-saving modes can sometimes reduce panel performance, leading to flickering:

  • Open the Settings menu.
  • Navigate to All Settings > Support
  • Navigate to OLED Care > Device Self Care > Energy Saving
  • Turn off the Energy Saving mode and check if the flickering subsides.

4. Run a Screen Self-Diagnosis

If the flickering persists, LG TVs offer a built-in diagnostic tool to identify software-related issues:

  • Access Settings > All Settings > Support > Screen Self-Diagnosis.
  • Follow the on-screen instructions to test for any underlying problems.

3. Update Firmware

Outdated firmware is a common cause of screen flickering. LG regularly releases updates to fix bugs and improve performance. Here’s how to ensure your TV is running the latest firmware:

  • Go to Settings > All Settings > Support
  • Select Software Update
  • If an update is available, follow the on-screen instructions to install it.
  • Select Auto Update and enable it to ensure your TV downloads updates automatically.

3. Update via USB

  • Plug your USB Drive to your computer and create a folder named LG_DTV
  • Unzip the Zip file you downloaded and copy the Software update file to the LG_DTV folder
  • Insert the USB Drive to a USB port on your TV.
  • A message should appear on your screen indicating that a software update has been detected.
  • Select Yes to install the update 

4. Factory Reset

Here’s how to perform a reset

1. Note down your preferred picture and sound settings, as these will be erased during the reset.

2. Go to Settings > All Settings > General > Reset to Initial Settings

3. Select Reset All

4. Confirm the reset and wait for the TV to restart.

After the reset, re-enter your Wi-Fi credentials and adjust settings to your preferences.

Hardware-Related Issues

If software fixes and picture adjustments haven’t resolved the flickering issue on your LG TV, it may be caused by hardware problems. Below are the most common hardware-related issues.

If you suspect that the flickering on your LG TV is caused by a hardware issue, do not try to repair the TV yourself unless you are a trained TV technician. Tampering with the hardware components of your TV may lead to further damage. Instead, request the service of an authorized technician or contact LG support for an authorized repair technician.

1. T-Con Board Issues

The T-Con (Timing Control) board is responsible for processing video signals and delivering them to the screen. A faulty T-Con board can cause flickering or flashing.

Signs of a Faulty T-Con Board:

1. Flickering occurs intermittently or only in certain areas of the screen.

2.The screen may display distorted or scrambled images.

2. LED Backlight Problems

The LED backlight provides illumination for the screen. Flickering in specific areas or across the entire screen can indicate failing LED strips or issues with the backlight voltage inverter.

Signs of  Backlight Issues:

1. If flickering occurs in one spot, it’s likely due to a damaged LED strip.

2. Use a multimeter to check if the power board is supplying adequate voltage to the backlight.

3. Power Supply Problems

A malfunctioning power supply can cause inconsistent voltage delivery, leading to flickering.

  • Ensure your TV is plugged into a stable power source.
  • Try using a surge protector to prevent voltage fluctuations.
  • If issues persist, inspect the power supply unit inside your TV for damage or overheating. A replacement may be required.

4. Loose or Damaged Internal Connections

Loose internal cables or connectors can also cause flickering.

Mkpoikana Otu - Tech Gorilla Author

The love of tech is strong with Mkpoikana, he has worked for numerous large publications online, providing tech insights, news and reviews.

He is a great member of our team and has several years experience of writing for tech companies.