TCL TV Half Screen Flickering? – (Best Working Solutions)

Do you have a TCL TV half screen flickering problem? Don’t worry. We got you!

Many TCL TV owners reported an issue where the left or right half of their screen flickers, flashes back or glitches out.

The error indicates several potential problems, such as power fluctuations and software glitches. 

To fix your TCL TV flickering screen, you want to ensure all the cables are connected securely to the ports on your TV. You also want to disable your TV’s Eco Mode or change the resolution.

Awesome, now let’s go over every aspect!

10 Best Solutions to Fix TCL TV Half Screen Flickering

We listed 10 proven solutions to fix your TCL TV screen problem. Make sure to test your TV after each method to see if it works. 

#1: Power Cycle Your TCL TV

A power cycle is still the first and simplest solution. It will clear any temporary settings and bugs causing the flickering issue.

It will completely discharge your TV and get rid of any of these problems before they become worse.

To power cycle your TCL TV, follow these steps:

1. Turn off your TCL TV using the power button on the remote or TV itself. 
2. Unplug the TV from the power outlet.
3. Wait for at least 30 seconds.
4. Plug the TV back into the power outlet.
5. Press the power button again to turn the TV on.

Tip: If your TV is unresponsive, unplug it for several minutes before plugging it back in. It will give your device enough time to discharge any residual power completely.   

#2: Check Your TV’s Power Supply

Your TCL TV will flicker or flash if it receives inconsistent or insufficient power.

Ensure it is plugged into a stable, reliable power source or surge protector. 

To check your TV’s power supply, follow these steps:

1. Unplug your TCL TV from the power outlet or surge protector.
2. Plug your TCL TV into a working power outlet or surge protector.
3. Turn on your TCL TV.
4. Check if the flickering issue is resolved.

Tip: Verify that the power outlet is functional and provides the voltage for your TCL TV mode. Avoid using overloaded power strips or outlets with inconsistent power supply. 

#3: Keep Sources of Interference Away from Your TV

If your TCL Roku TV half screen fading flickering problem persists, keep any devices or objects that emit electromagnetic waves or signals away from your TV and its cables.

These include wireless routers, cordless phones, microwaves, speakers, magnets, or metal objects.

To keep interference sources away from your TV, follow these steps:

1. Identify any source of interference near your TV or its cables.
2. Maintain a safe distance to reduce signal disruptions. 
3. Position your TV and its cable away from these sources of interference. 
4. Keep your audio and video cables neatly organized and separate from power cables.  
5. Check if the flickering issue is fixed. 

Note: If you suspect interference is still affecting your TV’s performance, consult your TV manufacturer’s support resources for guidance and solutions. 

#4: Make Sure Your HDMI Cables are Connected Securely

Loose or damaged HDMI cables cause poor signal transmission, leading to your TV flickering or flashing.

To fix this, ensure the HDMI cables connecting your TV to the input source are firmly inserted into the HDMI ports on both ends.  

Here are the steps to do this:

1. Turn off your TCL TV and the input source you are using. 
2. Unplug the HDMI cables from both ends.
3. Inspect the HDMI cables for cuts, bends, or frays. 
4. If you find any signs of damage, replace the HDMI cables.
5. Plug the HDMI cables back into the HDMI ports. 
6. Ensure they are firmly inserted.
7. Turn on your TCL TV and input source.  
8. Check if the flickering issue is resolved.

Pro Tip: If multiple HDMI cables are connected to different devices, label them to easily identify which line goes where.  

#5: Turn Off Eco Mode

Eco Mode helps you save energy and reduce eye strain by adjusting the brightness of your TV screen according to the ambient light in the room.

However, it also causes your TCL TV to flicker or flash if there is too much variation in the ambient light.

To fix this, turn off Eco Mode by following these steps:

1. Press the Settings button on your TCL TV remote. 
2. Select Picture or Display Settings.
3. Press Eco Mode.
4. Choose OFF.

If you turn off Eco Mode, you want to make sure that you check and adjust other picture settings like brightness, contrast, and color. 

Pro Tip: Disabling Eco mode will lead to slightly higher energy consumption, especially if you set your device to a brighter screen or more vibrant colors.   

#6: Test Different Input Sources

An important thing you need to do is to find out if the flickering issue is caused by one of the input sources connected to your TV.

There are cases when an external source causes this issue, so you want to figure out which one it is.

To test different input sources on your TCL TV, follow these steps:

1. Press the Input button on your remote control.
2. You will see the list of input sources on your TCL TV.
3. Select a different input source than the one you currently use. 
4. Press OK.
5. Monitor your chosen input source for a few minutes. 
6. See if the flickering issue occurs.
7. Repeat the process for all input sources available on your TCL TV.
8. Note which ones experience flickering and which ones do not. 

Tip: Experiment with various input sources, such as your cable box, game console, streaming device, or DVD player, to check if each works as expected. 

#7: Change Your TV’s Resolution Settings

Your TV’s resolution settings should match the resolution of the input source. Otherwise, it will cause your TV screen to flicker or flash.

To fix this, adjust the picture quality of your TV screen according to the resolution of the input source you use.

1. Press the Settings button on your TCL TV remote.
2. Select Picture or Display Settings.
3. Press Resolution.
4. Choose a lower resolution.
5. Check for flickering. 

Note: Ensure your chosen resolution is compatible with your TV and the connected devices. 

#8: Reduce the Refresh Rate of Your TCL TV

A high refresh rate often causes compatibility issues with some input sources.

If the LED TV half of screen flickering TCL TV is still not fixed, reduce the refresh rate of your TCL TV.

Here are the steps to do this: 

1. Press the Settings button on your TCL TV remote. 
2. Select Picture or Display Settings.
3. Press Refresh Rate.
4. Select a lower refresh rate.
5. Check if your TV continues to flicker. 

Note: The available refresh rates vary depending on your model. The common refresh rates are 60Hz, 120Hz, and 240Hz. 

#9: Disable the Dynamic Contrast Setting

Dynamic Contrast automatically adjusts the contrast of your TV screen according to the brightness of the scene to enhance the details and colors of your TV picture.

However, too much variation in the scene’s brightness causes the flickering.  

To fix this, turn off the Dynamic Contrast setting with these steps:

1. Press the Settings button on your TCL TV remote. 
2. Select Picture or Display Settings.
3. Press Dynamic Contrast.
4. Select OFF.
5. Check if the flickering is resolved. 

Note: Dynamic Contrast is often enabled by default on TCL TVs. Experiment with different picture settings to find what looks best to you.  

#10: Update Your TV’s Firmware 

Updating your TV’s firmware fixes bugs or glitches causing your TCL TV screen to flicker or flash.

To do this, follow these steps:

1. Press the Home button on your TCL TV remote control. 
2. Select Settings.
3. Press on System.
4. Choose System Update.
5. Select Check Now.
6. If an update is available, your TV will download and install it.

Note: Ensure your TCL TV is connected to a stable internet before starting the update to avoid interruptions. 

If the issue persists, perform a factory reset as a last resort, as it will erase all settings and configurations.

If the problem continues after performing a factory reset, contact TCL customer support or seek help from a qualified technician. 

Quick Recap

Many consumers reported their TCL TV half-screen flickering. It is likely due to a faulty or loose HDMI cable.

To fix this, ensure connections and check your TV’s power supply. If this doesn’t work, test different input sources and update your TV’s firmware.