TCL Roku TV Screen Flickering? (Don’t Panic, Easy Fix!)

Are you wondering what causes the TCL Roku TV screen flickering? Well, stay with us!

The consistent flickering of your TCL Roku TV’s screen is often caused by improper power supply, picture settings, or outdated display video drivers.

We’ve uncovered the most effective solutions to the problem:

Keep reading to understand each of the solutions in detail!

TCL Roku TV Screen Flickering How to Fix in Easy Steps?

Info: Your TCL Roku TV uses the Roku OS, meaning it shares the system of all Roku streaming sticks or player boxes!

1. Discharge the TCL TV’s Power Supply

A potential fault with the power supply of the TCL Roku TV could cause the display to flash, flicker, or even go blank for prolonged periods of time.

The first and one of the most effective steps is to perform a power cycle, by temporarily disrupting the electrical supply of the TV.

Here are detailed steps on how to perform a power cycle:

1. Press the “Power” button on the TCL Roku TV’s remote.
2. After the TV shuts down, unplug the power supply cable.
3. Wait for 30 seconds for the residue power to drain entirely.
4. Reconnect the power supply cable of the TV into the outlet.
5. Turn on the Roku TV and check if the flickering is still there.

How to Check TCL Roku TV for Power Issues?

If the power cycle had little to no effect, there could be a more serious problem with your TV’s electrical setup.

In such cases, we recommend undergoing several stages of troubleshooting:

• Ensure the TV’s power adapter is secured on both ends.
• Connect the TCL Roku TV to an alternative power outlet.
• Inspect the power cable of the TV for visual HW damage.
• Disconnect all third-party power equipment from the setup.

Note: Some apparent signs of underlying power issues with the TV may include unexplained rebooting, buzzing noises from the A/C supply, or sudden loss of power.

2. Test on a Different Source/Broadcast

If you’re not broadcasting from the TV’s internal system, the flickering could be caused by a defective HDMI or coaxial-connected device.

The next step is to launch an app or switch to a native source of the TV that isn’t influenced by a third-party streaming player or a console.

Important: Unplug All Third-Party Devices!

Even if you haven’t set the TCL Roku TV to the source of an external device, it’s recommended to disable all third-party video and audio cables from the TV.

So, ensure the only cable that is left connected to the Roku TV is the power adapter, and test whether the flickering is still there. 

3. Adjust the Picture Settings of the TV

Some particular combinations of the TCL Roku TV’s picture settings could cause the display to flicker or behave unusually.

So, the next step is to re-configure the picture settings and ensure all of the correct values have been set to eliminate the flickering.

Here’s how to adjust the picture settings of the TCL Roku TV:

1. Press the “Star” button on the TCL Roku TV’s remote.
2. Select “Picture Settings” from the menu on the screen.
3. Access the “Customize Picture Mode” from the menu.
4. Next, navigate to the “Expert Settings” tab to configure.

Then, we recommend adjusting the following picture settings of the TV:

• Gamma correction: Set to “1.8” or “2.0”
• Noise reduction: Set to “Off”
• Color temperature: Set to any preset.
• Color space: Do not change.
• Local dimming: Set to 50%.
• Action smoothing: Set to 50%
• LED action clarity: Set to 20-30%

How to Reset TCL Roku TV Picture Settings?

If you’ve tempered the picture settings on your TCL Roku TV previously, and you’re uncertain of the changes you’ve made, it’s recommended to restore all values to defaults. 

• You can reset the picture settings by going to “Star” → “Picture Settings” → “Customize Picture” → “Reset Settings” → “Reset.”

Note: When ready, restart your TCL Roku TV!

4. Update the TCL Roku TV’s Firmware

The TCL Roku TV flickering screen could even be caused by an outdated version of the TV’s video drivers.

To upload the latest version available for the drivers, you must update the TCL Roku TV’s firmware through the system settings.

Here’s how to update the firmware of the TCL Roku TV:

1. Press the “Home” button on the Roku TV remote control.
2. Navigate to the “System” tab and go to “System Update.”
3. Select “Check Now” at the bottom and press “Update now.”
4. Wait until the TCL Roku TV detects and applies the update.

Before starting the update, ensure the TV has established a secure connection to the Wi-Fi network.

• You can connect the TV to Wi-Fi by going to Settings → Network → Wireless and selecting your home Wi-Fi from the network list. 

5. Confirm the TV is Not Overheating

Often, the TCL Roku TV screen flickering is caused by an elevated hardware temperature.

As a result of overheating, the CPU may start skipping the workload by reducing the frequency of operation, resulting in consistent flickering of the TV’s screen.

Tip: It is enough to press your hand against the back panel of the TV to check for overheating!

5.1 What Causes TCL Roku TV Overheating?

Here are the leading causes of overheating of the TV:

• Extended overloading of the CPU’s capacity.
• Improper ventilation or faulty vent openings.
• Heat conductors that transfer warmth.

Like any other electrical appliance, the TCL Roku TV also has ventilation openings that when clogged may disrupt the conditional airflow. 

5.2 How to Solve Overheating of TCL Roku TV?

Here are the most effective steps to reduce the Roku TV’s temperatures:

• Exit all applications, apps, and broadcasts on the TV temporarily.
• Power off the TV and use a dry cloth to clean the vent openings.
• Relocate nearby heat conductors in a 3-foot range from the TV.

Alert: Prolonged overheating could cause irreversible damage to the TCL Roku TV!