Best Ways To Fix A Flickering TV Screen

16 Min Read

How to fix a flickering TV screen: We will go over solutions to this problem as well as settings and parts that you should check to ensure your TV screen no longer flickers.

Why is my TV screen flickering?

Possible Reasons why Your TV Screen is Flickering: If your cable connections are loose, your cables are damaged, or your connection ports are damaged, your TV screen will flicker. Electrical interference or even the lighting in the room can cause your TV’s screen to flicker.

How to fix a flickering TV screen

Try the following tips to fix the flickering TV issue.

Examine the video source for issues.

The video source should be checked if your screen is flickering while watching a live event or recorded video.

The flickering is a problem with the video file if you play the video on your computer or smartphone and it persists.

This problem may result from damaged frames or a lack of metadata. As the flickering is already present in the source file, there is nothing that can be done to eliminate it in this instance.

Look for loose connections in your cables.

A loose connection or damaged cables may also be to blame for the flickering on your TV screen.

Check your ports to ensure that everything is connected safely and that no connection points are frayed or damaged.

If you want to check your cables for internal wiring damage, you can do so at your neighborhood hardware store.

If you need to buy new cables, make sure to buy high-quality ones because they’ll be made to a higher standard, last longer, and deliver good performance.

Check if Your TV’s power supply is dying.

Your TV has a power supply unit, just like all other electronic devices, and it eventually reaches its limit for supplying power to the different parts of your TV. Random power cycles, screen flickering, and your TV occasionally not turning on are some early indicators of a failing power supply.

A professional can inspect and replace the power supply unit, but if you know how to replace a power supply, you can do it yourself. It’s significant to note that specific internal components in some TVs may require proprietary cables and connectors. Therefore, it would be best to call a technician to look at your TV even if you know how to fix it.

Switch Off your TV and Turn it Back On Again

Turning your TV off and back on again will stop any flickering immediately.

When a TV is turned on, especially with older models, there may occasionally be a problem when the screen’s refresh rate tries to match the refresh rate of the content.

Another factor is that not every LED on your screen would have properly turned on.

The LCD panel may have a problem with one or more display layers, which can be resolved by turning the TV off and back on.

If this does not resolve the problem, there may in some cases be another reason to be concerned.

Unplug and then re-plug your TV

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Try unplugging your TV from the outlet and letting it run without power for about a minute. By doing this, you’ll make sure your TV uses up all of its residual power before you turn it on again.

Reconnect the plug, then switch on the TV. If the flickering stops, an older TV model’s minor power cycle problem may have been the cause.

You may occasionally need to reset your TV. To do this, refer to the instructions in your TV’s user manual, or, if your TV has a reset button, press the button with a paperclip for about 15 seconds to reset your TV.

If this issue persists, you might need to reset your LCD or LED TV on an older model every few months.

Check for any electrical interference

Electrical interference can occur if there are several electronic devices close to one another.

This also applies to TVs, where it may result in screen flickering and distorted images. This problem can be resolved by unplugging all nearby devices and examining each one individually to determine which one is the source of the interference.

It is best to relocate any other devices that are contributing to the problem to a different area. You can also ask your neighborhood electrician to look for any electrical interference problems because they can offer a longer-lasting solution.

Disable the Energy Efficiency Feature

Most LCD and LED TVs come with an energy efficiency mode or “green mode”. This feature optimizes the settings on the TV to use the least amount of electricity.

But sometimes, this can also cause issues, especially in places where your voltage might fluctuate.

Navigate to the ‘Settings’ tab on your TV and look for an option called “Energy Saving” or “Power Saving”. From here, there should be an option called “Green Mode,” “Power Efficiency Mode,” or “Power Saving Mode.”

Turn off this feature and switch off your TV. After a minute, turn it back on and the flickering should have stopped.

If it doesn’t, continue reading.

Check your room lighting and the refresh rate of your TV

Although it might sound silly, your room lighting along with the refresh rate of your TV can make it look like your screen is flickering.

Think of it as being similar to an optical illusion.

If you see your screen flickering in dim lighting, switch on a bright light and see if the flickering continues. If it doesn’t, then it’s an issue with the lighting.

You can rectify this by either using a brighter light or reducing the refresh rate on your TV.

To reduce the refresh rate:

  • Open ‘Settings’ on your TV.
  • Navigate to ‘Display Settings’ and look for ‘Refresh Rate’.
  • Click on it and select the refresh rate you want to use.
  • Confirm the changes.

Your TV will now refresh its screen with the new settings.

Most older models only support 50Hz and 60Hz refresh rates, while newer ones support more refresh rates.

If you use a model with more than 2 refresh rate options, switch between them to see which works best for low light and which is best for bright lighting.

If you are watching shows online, check your internet.

Make sure your internet connection is strong enough if you plan to stream content from an online service to your TV.

Fix A Flickering TV Screen
Checking Internet Speed: How to fix a flickering TV screen

Run a speed test to determine whether your internet speed is sufficient for Wi-Fi. If it isn’t quick enough, you might try connecting the TV to the router, assuming your TV supports Ethernet LAN connections.

Occasionally, choppy streaming can result in problems like audio being out of sync and your TV screen flickering if the network is not fast enough or if the connection is unstable. You can either move your router closer to your TV or, as I would suggest, connect it using an Ethernet cable.

Inspect your TV for any Overheating Issues

Overheating could be a problem if your television is old. If the overheating issue is not resolved, LCD TVs may completely fail. Overheating can make the image flicker and appear distorted.

Overheating in LED TVs can lead to old LEDs malfunctioning and slowly ceasing to function, producing dead pixels.

Because LEDs are made up of individual bulbs, unaffected bulbs will continue to work. On an LCD, however, it will eventually spread throughout the liquid display, making the screen useless.

You might consider upgrading the cooling system on the TV service if the problem doesn’t appear until after several hours of continuous use. It might be time to consider getting a new TV if the flickering appears shortly after turning the device on or starts right away.

Check for any Connectivity Issues in the Internals of your TV

If you feel comfortable checking your TV’s internals, you can use the steps listed below to see if there is any internal damage.

If, however, you don’t feel comfortable doing this, you can ask a hardware technician to examine the device for you.

To check the TV’s internals, you must first locate the screws needed to remove the back panel from the device.

Depending on your TV model, these will typically be placed in a variety of locations around the back.

Once you’ve succeeded in removing the back panel, be sure to use a microfiber cloth to wipe away any dust or dirt that may have accumulated over time.

Now check every connection point on your TV, including the power, HDMI, audio in/out, and any others you might use.

A certified technician may need to replace the ribbon cables for these components if you notice any fraying or other damage.

In the majority of cases, however, connection hiccups and screen flickering may simply be the result of accumulated dust and dirt.

Look for any screen burn-in

LED and LCD TVs don’t typically experience screen burn-in as CRT TVs do, but they still experience some of the same problems.

Your LCD may have burn-in issues if it has been showing a static image for a considerable amount of time.

This may result in the image remaining on the screen for some time even after the display has been changed. This same problem can affect LEDs and result in the screen flickering as a result of inconsistent display.

This is known as image persistence on LED and LCD TVs.

Because this problem is typically caused by a TV’s brightness is set too high, you can reduce its frequency by turning down the brightness.

Short of LED-TV Pins

Another possible cause of the flickering on your LED TV is a slight malfunction in the coprocessor that makes your TV turn off the LED backlight. You’ll need to open up the TV to access the motherboard and shorten the coprocessor’s pins.

Please take note that damaging these components will necessitate a very expensive repair if done incorrectly, so it’s best to leave it to a professional if you are not experienced with these types of fixes. However, shortening the two pins on your TV’s coprocessor should help stop the screen from flickering if you are knowledgeable about how to do so.

Consult a specialist

It is best to consult a specialist.

The best course of action would be to get in touch with a certified technician to look at your TV if none of the aforementioned solutions were successful in stopping your screen from flickering.

This is also advised when attempting to fix newer TV models, which typically have more intricate internal components.

The majority of the time, these components are soldered to the motherboard, necessitating the use of the proper equipment and knowledge to remove the damaged components and re-solder the replacement parts.

Most Commonly Asked Questions

Why does my LG TV screen keep flickering?

A loose or damaged cable is the cause of your LG TV’s screen flickering. Sometimes, a bug or a picture setting needs to be fixed. Visual problems with your LG TV can result from turning on Energy Saving mode or raising the backlight level too high. Last but not least, the issue might be faulty internal hardware.

How do you know if your HDMI cable is bad?

If you have issues with the video, audio, or any combination of the three, you might have a faulty HDMI cable. Try a different cable to see if that fixes the problem.

Are LED TVs flicker-free?

LED TVs flicker at extremely high rates by nature, which is how your TV’s display is produced. Though it is typically undetectable to the human eye because they refresh anywhere between 50 and 60 times per second (and occasionally even more).

Can HDMI cause flickering?

Screen flickering may be brought on by a frayed or poor-quality HDMI cable. Always make sure to purchase high-quality cables for any device you own.

Can a flickering screen be fixed?

Turning your device off and back on again is the most common solution for flickering screens. As mentioned in the article, there are additional ways to fix it.


Since the days of CRT TV, screen flickering has been a part of well-known TV problems. You can fix the screen flickering problem by using the fixes and techniques mentioned above because they work in a variety of situations.

In some extreme circumstances, it may be preferable to buy a new TV since repairs can cost as much as a brand-new TV.

Additionally, make sure to always buy premium cables for your TV because they are crucial to maintaining the durability of your appliance.

Additionally, it is advised against tampering with the wiring and TV components if you are unfamiliar with how electronics operate.


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