LG TV Blinking Red Light: 2023 Guide

LG TVs are known for their high-quality picture and sound, making them a popular choice among consumers. However, one issue that some LG TV owners may encounter is the “LG TV blinking red light” problem. This issue occurs when the power light on the TV blinks red continuously, indicating a problem with the device. It can be a frustrating experience for users who are unable to use their TV as they normally would. In this article, we will explore some of the reasons why an LG TV may be blinking red light and provide some solutions to help users fix the problem.

Also, read LG TV No Signal

LG TV Red Light Blinking

LG TV Blinking Red Light

You may have a problem with your LG TV’s power supply or with the main board or power board if you see a blinking red light. Make sure all cables are tightly connected to your TV by changing wall sockets, using a different power cord, and using a different power cord. If you want to make sure that your power board works, you can also use a voltmeter.

In the event that your LG TV’s red light blinks repeatedly when you try to turn it on, power problems are the most likely suspect.

In spite of the fact that you think the number of flashes on your TV should tell you what the problem is, this isn’t an effective diagnostic tool in general. If the red light on your LG TV blinks three times, seven times, or however many times, you should try the same fixes.

Here are the details for how to fix this problem, starting with the simplest fixes and moving on to hardware fixes if those don’t work.

1. Update Your LG TV’s Software

Verify that your LG TV is not running a WiFi or Ethernet software update before proceeding.

There’s a potential update on the TV if the red light flashes and the remote doesn’t work.

If the red light still blinks after waiting 10 minutes, it could be an issue with the software update.

You should try power cycling your LG TV in this case to reset it.

It’s possible that something got stuck in your TV’s flash memory with modern electronics.

Your TV’s main board will be reset if it is powered off and any issues with non-permanent memory are cleared out.

There is no need to worry about losing any of the settings you’ve saved because this is a quick and painless process.

  1. Unplug your TV and switch it off.
  2. Make sure the TV is turned off at least 15 seconds after pressing the power button.
  3. The TV’s capacitors (which can store charge for several minutes) must drain for at least 30 minutes before any residual power can be used.
  4. Try turning on your TV again after plugging it back in. If you have been successful, a red light should appear.

The components in your TV can hold charge for a long time, so you want to make sure they are fully reset before plugging them back in.

Despite its simplicity, don’t overlook this step since, in most cases, a simple soft reset will solve most problems.

While most LG TVs will now be running again once they are reset, if your TV’s red light continues to blink after resetting, we have a few more basics to try before we move on to hardware fixes.

Also, read How to Turn on LG TV Without Remote?

2. Check Your HDMI Settings

If your TV displays a red standby light when it isn’t working, it is likely because of a poorly seated cable automatically switching inputs, but because it isn’t fully connected, the signal cannot be supplied.

There are two options here:

  • The HDMI cable has a break in it and is faulty
  • A HDMI port with broken pins has been damaged
  • Connector and cable are not fully in contact, resulting in a poor HDMI connection

Check your HDMI and other cables by following these steps:

  1. Your TV should be turned off.
  2. Your TV’s back should be free of HDMI and other physical cables.
  3. Make sure the cable contacts as well as the connector on the TV are clean by using compressed air. Blowing gently on them if compressed air is not available will work just as well.
  4. Make sure the TV’s cables are firmly inserted back into their slots.
  5. Once the TV is back on, turn it back on.

Using another HDMI input may fix the problem if that does not solve it. A TV usually has 3 or 4 HDMI ports.

This one should have a separate connection to the TV’s main board if it is on another part of the TV.

Using the Input or Source button on your TV remote or the Input or Menu button on your TV, connect your HDMI cable to the new port, note the number next to it, and then choose this HDMI input on your TV.

If you don’t want any external devices connected to the TV, remove all the coaxial and signal cables, as well as all Bluetooth devices.

When you plug other devices into your TV, particularly games consoles, a flaw in HDMI-CEC settings can prevent your TV from turning on properly.

By using HDMI-CEC, your console can automatically turn on your TV through two-way communication.

Your TV will not recognize your remote if you don’t switch inputs before turning off the TV. Instead, it will blink its red lights and not “listen” to your remote.

The red light will stop blinking if all cables are unplugged, so if your TV is working normally, try switching off HDMI-CEC before re-connecting them.

You can disable HDMI-CEC on an LG TV by looking under the Settings -> General -> SimpLink (HDMI-CEC) menu for SimpLink.

3. Does your LG TV remote work?

You may not be able to control your TV if the red light is blinking, but it is receiving power.

Ensure that you have a good line of sight to your TV if you are using an IR remote.

Verify that your RF remote is connected to your TV’s local network if you are using one.

Replace the existing batteries in your remote with brand new ones if you cannot check them.

If you have an IR remote, you can use the camera on your smartphone to check if it works.

Press any button on the remote and you will see a red light appear when the IR transmitter on the end of your remote is pointed at your phone’s camera.

Some cameras do not work with this remote, notably some iPhones, so if in doubt, try another remote.

4. Check the voltage of your wall sockets

If your LG TV is blinking red, the most likely cause is a power issue in your home, not a problem with the TV itself.

Before using your wall outlet, make sure it is providing enough power, and that there is no interruption in the supply.

The following methods can be used:

  1. The LG TV should be unplugged from the wall socket.
  2. Make sure your wall socket has a direct connection by removing any surge interrupters or smart plugs.
  3. Make sure the new device works as expected by plugging another large device into the same socket. In order for the socket to work properly, this device must draw approximately the same amount of power as your TV.
  4. Make sure your TV is plugged into this socket again after you remove the other device.
  5. Utilize the power button located somewhere on your TV’s case (usually beneath the LG logo) to turn on the power and switch on the TV.
  6. Make sure the red light is solid. It means your TV is receiving enough voltage if this is the case.
  7. Repeat these steps with another wall socket if your TV’s red light blinks 5, 6, 10 times or more.

The next step should be taken if you have tried a number of sockets and still see a red light flashing.

5. Power Cord Damage

Ensure that the power cord itself is not damaged if you didn’t check when changing your TV’s wall outlet.

Make sure the cable is free of kinks and knots, which can corrode copper wires mechanically as well as increase electrical resistance, causing heat, which may not be obvious.

If you own or can borrow a new power cable, it may be a good idea to use it because there may be damage within the cable that you cannot see.

In addition, be sure to thoroughly inspect your TV’s power connector for corrosion, dirt, and dust.

6. Inspect the main board and power board for failures

Once the external connections have been checked, the remaining connections are internal, particularly the main board or power board.

A multimeter can be used to check that the voltages across the boards are correct, which is hidden inside the case of your TV. These can be checked for failure by simply taking the case of your TV apart.

It is important to note that this invalidates your TV’s warranty, so if you bought it within the past year, get it fixed by LG.

The cost of an out-of-warranty main board replacement can run from $200 to $400, but you can do it yourself for around $30 to $50.

Check out the video below for detailed instructions on troubleshooting the main board and power board.

You are looking for two things:

  1. Check if the power socket on the power board is receiving power and if all components are receiving it.
  2. There are no signs of damage to any components. During power surges, capacitors are particularly susceptible to swelling, resulting in failure.

A problem with the backlight inverter is most likely if both the power board and main board are in good condition.

The backlight of your TV is powered by this device by increasing the standard voltage and current of your home supply to the required levels.

On most TV models it is a small board (although it may be integrated into the power board in some models). Don’t forget to check the cable as well as the board with your voltmeter. When these boards fail, they are cheap to replace on eBay, costing only $10-15.

Last but not least, ensure that your backlight itself is working.

The backlights themselves may need replacing if the inverter and cable function normally, with normal voltages displayed on your voltmeter.

Although this is a slightly more involved job, you can do it from home without any hassle. This can be done by following the steps in the video below.

Also, read If Your LG TV Won’t Turn On

LG TV Support and Warranty

If you would like to check your warranty information directly with LG, you can do so.

Unless you have extended the warranty, warranties typically last only a year.

Under one-year-old TVs that have blinking red lights can be returned under warranty for repair at any time.

It’s best if you call LG directly if you are at this stage, but you can use the LG support site to diagnose your problem.

  • (Monday through Sunday, 8 am to 9 pm EST) 850-999-4934

LG TV Red Light Blinking Multiple Times: What to Do?

If your LG TV is blinking a red light multiple times, it can indicate a more serious problem with the device. Here are some steps you can take to address this issue:

  1. Check the power supply: Make sure that the TV is properly plugged in and that the outlet is working. Try plugging in the TV to a different outlet or power source to see if the problem persists.
  2. Check the remote control: A malfunctioning remote control can also cause the TV to blink a red light. Replace the batteries in the remote control and see if that resolves the issue.
  3. Reset the TV: Try resetting the TV to its factory settings. To do this, navigate to the “Settings” menu on your TV and select “General.” From there, select “Reset to Initial Settings” and follow the prompts.
  4. Contact customer support: If none of the above steps work, you may need to contact LG customer support or a professional technician for further assistance. Be sure to provide them with as much information as possible about the problem, including the number of times the red light is blinking.

In conclusion, if your LG TV is blinking a red light multiple times, it can indicate a more serious problem with the device. However, by following these steps and seeking professional help if necessary, you can help resolve the issue and get your TV working properly again.


Why is my LG TV blinking a red light?

There are several reasons why an LG TV may be blinking a red light, including a problem with the power supply, a malfunctioning remote control, or an issue with the TV’s circuit board.

How can I fix the LG TV blinking red light problem?

The solution to the problem will depend on the specific cause of the issue. Some potential fixes include checking the power supply, resetting the TV, or replacing the remote control batteries. In some cases, professional repair may be necessary.

Is the LG TV blinking red light problem common?

While the issue is not uncommon, it is not necessarily a widespread problem. Many LG TV owners never experience the blinking red light problem.


In conclusion, the “LG TV blinking red light” problem is a frustrating issue that some LG TV owners may encounter. However, there are several potential solutions to the problem, ranging from simple fixes such as checking the power supply or resetting the TV to more complex solutions that may require professional repair.

If you are experiencing this issue with your LG TV, we recommend trying some of the troubleshooting steps we have outlined in this article. If these solutions do not work, you may need to contact a professional technician for further assistance.

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