Your LG TV may suddenly begin to experience flickering of the screen, logo, or power light.
Several people who own LG televisions have reported having this problem. Others claim to have dealt with it for years.
There are a number of potential causes and solutions to the flickering you may be seeing on your LG Smart TV.
Let’s dive in!
ℹ LG TV screen flickering? Try this quick fix first…
If your LG TV is flickering, you must reset it. Unplug your television from the wall and wait exactly 60 seconds. Next, reconnect your TV to the power source. This will perform a safe soft reset on your TV, allowing it to start right up and have a non-flickering display without any issues.
The above method is called a “soft reset” and will most likely cure the issue, but if it doesn’t don’t worry….because we have compiled a list of alternative ways to fix your LG TV flickering problem.
How to Troubleshoot LG TV Flickering
Check for a Malfunctioning Backlight (The Flashlight Test)
Your LG TV’s backlight is probably faulty if the picture keeps flashing or flickering.
You can test the backlight by shining a light on the screen.
The LCD crystals will continue to emit color even if the backlight stops working, making them visible once again with the use of an external light source.
The most likely culprit for this issue is a complete failure or a hardware issue.
To fix the problem or replace the hardware, a technician will be required to open the TV’s back.
Check for Power Problems
It is possible that a malfunctioning backlight is the primary cause of a flickering display. You can’t rule out the possibility of a power problem, either.
To ensure that your power source is functioning properly try this:
- Unplug your TV from the wall outlet
- Plug a lamp into the same wall outlet
If the light bulb flickers or blows out you have a problem with the power source itself. NOT the TV.
To determine if a defective power strip is to blame, you can repeat the previous instructions using your power strip instead of the power outlet.
Adjust your TV’s Backlight Level
Flickering can be caused by the LG TV’s settings:
- Enter your LG TV’s Settings menu
- Make sure you’re in All Settings and select Picture
- Choose Backlight and optionally Brightness to adjust the brightness of your backlight
Additionally, some LG TVs come equipped with an ambient lighting sensor that keeps track of changes in the lighting right around your television.
Observe the Lighting Levels of Room
Contrary to popular belief, television screens flicker constantly. However, it usually happens so quickly that you wouldn’t even notice!
Flickering can be seen on TVs under certain lighting conditions, but this is only true in the most extreme cases.
Either make the room darker or brighter to correct the problem.
The brightness of your television can also be modified to solve this issue.
It may take some time to get the hang of this, so give it some time prior to actually trying a different solution.
Perform a Picture Test
Even after trying different picture settings, your screen might still be flickering.
It’s possible that you’ll have to run a picture diagnosis.
You can follow the steps outlined in the following section:
- Press the Settings button on your LG remote control
- Choose All Settings
- Then select Support
- In order to perform a picture test, select Screen Self Diagnosis
The test will walk you through the correct procedure and advise you on any changes you need to make to make sure your screen is functioning properly.
If this doesn’t fix the flashing, then the next step is to examine your cables and ports.
Check HDMI Cables and Connections
A faulty cable is another possible cause of a flickering screen.
An issue with HDMI cables in particular is that they can fail unexpectedly.
For this reason, make sure to inspect your HDMI cable if you’re currently using one.
Try to remove any dust or debris that may have accumulated with a soft brush or cotton swab.
Make sure you’re using an up-to-date HDMI version 2.0 or 2.1 cable as well.
Flickering on the screen could also be the result of a faulty port.
At least four HDMI ports are standard on new LG TV models. Plug your external device or video source into one of those instead.
If you are still have flickering problems, then it may be time to update your TV’s software.
Update Your LG TV’s Software
Checking for and installing new LG TV webOS updates can often be the solution to your problem.
It’s as simple as checking to see if your TV model has a firmware update available. Sometimes these updates are missed, but they are usually done automatically.
First, turn on your LG TV and follow these instructions:
- Press the Home/Start button on the remote
- After that, select Settings from the drop-down menu
- Click on All Settings
- Choose General
- Navigate to About this TV
- Verify that Automatic Updates is toggled ON
If there are any software updates available for installation they will be done automatically by your TV.
Keep in mind, you can also manually update the software on your LG TV if automated updates stop functioning for any reason.
Follow these steps to manually update your LG TV firmware:
- Go to the LG TV Support Page
- Type in your LG TV’s model number
- Download and unzip the file containing your TV’s current firmware
- Create a folder on a USB flash drive titled LG_DTV
- Place the unzipped EPK file in the newly created folder
- Insert the flash drive into the USB port on the rear of your LG TV
- Follow the on-screen prompts/instructions
Make sure to keep your LG TV up-to-date with the latest software by performing regular updates.
How to Factory Reset a LG TV
The factory reset option is recommended if either of the two steps above fixes your LG TV flickering problem, but the problem returns at a later date.
If your LG TV has a flickering display, it could be because of a software error. A factory reset of your television can resolve this issue.
If you have access to a functioning remote control, then try this method first (It’s the easiest):
- To access the menu, press the Smart button once the TV has been turned on (you may have briefly powered it up by disconnecting it or removing the remote batteries).
- Click the Gear icon that should be present in the top right
- Find General and choose the Reset to Initial Settings option
If you can’t find your remote or it doesn’t work then try performing a factory reset by using the buttons located on the LG TV itself.
- Find the Power (which is normally located on the side of the screen) and press it to turn the TV on
- Hold down the Power button for at least 10 seconds
- The TV will immediately reboot and enter factory reset mode. Rebooting and resetting your TV takes a few minutes.
Once the process is finished, your LG TV will return to the settings it had when it was purchased.
Still, having issues? It might be time to call in the professionals…
Contact LG Customer Support
Contacting customer support may be necessary if none of the above solutions work to speed up your LG Smart TV.
LG customer support is available via text message, internet live chat, and phone.
You can contact customer support at 1(800) 243-0000 if you want to speak with someone directly. Customer service hours are 7:00 a.m. – Midnight Central Standard Time, Monday through Friday.
You can also try out the Text Support or Live Agent Chat options if you prefer to communicate via typing.
While contacting support may resolve the issue, there may be other problems with your TV that you are unable to resolve on your own.
They can help you by working with you over the phone or by providing instructions on how to send in your TV for repair, if necessary.
Other Options (Nothing Has Fixed the Problem)
If you can’t find a solution to your LG TV flickering, and your TV is out of the warranty window then you really have two choices:
Purchase a New LG TV
It might be better to just buy a new television set if your LG TV is no longer covered by a warranty.
Since smart TVs have never been more affordable, you might be able to purchase a brand-new TV with more features and a larger screen for the same cost (or less) as repairing your old one.
Repair your LG TV
Even if it isn’t covered by the initial warranty, you can still send your TV back to LG for repairs.
But your best bet is probably to find a certified repair professional in your area.
You have to be very careful when you take a TV apart. There are a lot of fragile wire connections and high-powered circuits in the TV that might cause damage (or even electrocution) if you make the wrong move.
This is why we advise having your TV repaired by the manufacturer (even if the warranty has lapsed) or finding a certified TV repair specialist on your own to do the required repairs.
Unless you are highly skilled at electronics repair, we never recommend trying to replace internal parts (like a bad controller card or backlight) yourself!
Frequently Asked Questions
Here are answers to some of the most frequently asked questions about troubleshooting your LG TV that is flickering 👇
Why does my LG TV screen keep flickering?
The most common causes of video flickering are incorrect image menu settings or linked external devices. The video flickering might be brought on by the Picture menu setting. The occurrence of video flickering may be impacted by the energy-saving TV mode option.
What does it mean when your TV starts flickering?
Flickering on TVs can occur for a number of internal and external reasons, including loose wires, defective electrical work, low power supplies, fading bulbs, and out-of-date firmware or software.
How much does it cost to fix a flickering TV?
The national average for TV repair is $80, however most customers spend between $65 and $90. The type of TV, the difficulty of the issue, and the number of parts required all affect the cost. TV repair businesses frequently pick up and deliver customers’ TVs for a set fee.
As mentioned previously, your LG television may be flickering for a variety of reasons.
Here is a summary of the ways to fix your LG TV when it is flickering:
- Check for a malfunctioning backlight
- Adjust your TV’s backlight level
- Check lighting levels of room
- Reset the picture settings
- Check for power issues
- Check for faulty HDMI cable and connections
- Update software
- Factory reset TV
- Contact LG customer support
- Purchase a new TV or hire a certified repairman to fix the current unit
If this was able to assist you fix your LG television, please let me know. If you have a different suggestion or technique that helped you stop your TV from flickering, please leave a comment!