LG TV Keeps Turning Off? Here’s 10 Easy Fixes


Wondering why your LG TV turns off by itself?

You’re not alone! Being interrupted while watching your favorite show or movie because your LG TV randomly turns off can be super annoying.

Luckily, you’ve come to the right place to fix the issue.

If your LG TV keeps turning off, check for power issues, install any available updates, and perform a reset. Checking the remote, clearing your cache, and inspecting the HDMI connections can also help you fix the issue.

That’s the quick answer, though. Keep reading to learn more about other fixes!

Why trust us? This article was written by Craig Anderson and Austin Sharman.

Craig has helped thousands of other homeowners repair their appliances since 2016.

How to Stop Your LG TV From Turning Off: 10 Fixes

Different reasons can explain why your LG TV keeps turning off. Luckily, in this section, you’ll find ten simple fixes that will help you get back to your movie night in no time.

Are you ready? Let’s dive in!

#1 Check the Power Cord and Socket

I find that the simplest fix for an LG TV that turns off by itself is to check that the power cord or the power cord is plugged in properly.

You should double-check that the power cord is firmly plugged into the wall socket and the back of the TV. If it is not, you could experience problems with your TV cycling on and off.

TV cord in socket
Push the cord firmly into the socket, make sure it isn’t popping back out at all.

It’s also important to ensure that your power cord isn’t damaged. If it is, it will begin to malfunction and mess with the proper running of your TV. Check for any fraying or exposed wire.

When checking for damage, make sure you plug the TV out first. If you find any damage or smell any burning around your power cord, you should discontinue using the TV. You will need to replace the cord.

I also recommend checking the power socket. Here’s how to do it:

  1. Plug the TV out of the power socket
  2. Plug another device into the power socket, such as a hairdryer.
  3. Turn the hairdryer on to the maximum speed and heat. If the hairdryer works as it should, you can conclude that there isn’t a problem with your power socket. If it doesn’t, you must call an electrician to repair the faulty connection.

However, if your LG TV keeps turning on and off repeatedly, then keep reading.

Find Out How Much You Could Save On Energy Bills

Question 1 of 5

How many bedrooms are in your home?

#2 Reset the TV

In my opinion, one of the easiest ways to fix LG TV issues is to perform a reset.

You see, by resetting your TV, you’ll eliminate any bugs or glitches that could be stopping it from staying turned on.

Here’s how you can reset your LG TV:

  1. Turn off the TV using the power button.
  2. Plug the power cord out of the wall socket. Keep it unplugged for one minute.
  3. Plug the TV back in.
  4. Turn it back on using the power button.
Unplugging TV
Resetting your LG TV can help you solve the issue.

#3 Check the Remote

If your LG TV is still turning off by itself, then the remote is probably sending incorrect signals.

To rule out the remote as the possible culprit, my usual advice is to point it away from the TV or keep it in another room to see if the issue continues.

If the issue gets solved, please replace the batteries in the remote.

#4 Deactivate Quick Start +

I’ve seen that deactivating the Quick Start + function sometimes puts an end to the TV on/off problems.

Here is how you can deactivate Quick Start + from your LG TV:

  1. Press the “HOME” button on your remote control
  2. Choose “SETTINGS”
  3. Navigate to “GENERAL”. You should then see the Quick Start + option in the dropdown menu. Click this option, then choose “OFF”.

Keep in mind that the Quick Start + feature is only available on certain models. Please read the manufacturer’s manual to check if the function is available on your LG TV.

#5 Inspect HDMI Connections

If you’re still experiencing issues with your LG TV, then it’s time to check the HDMI connections.

While updating or adjusting power states, external devices can send false signals to your TV, causing unexpected power cycles.

To solve the issue, ensure all HDMI cables are securely connected. You can also try disconnecting all external devices, such as gaming consoles and soundbars, to see if the problem persists.

I also recommend turning off the HDMI CEC function on your TV. The CEC feature in some LG TVs is called ‘SimpLink’. It allows the TV to automatically change inputs or turn off depending on what’s connected to it via HDMI.

To turn off SimpLink:

  1. Go to the “MENU”
  2. Go to “GENERAL”
  3. Go to “HDMI SETTINGS”.
  4. Turn off the “SimpLink” option.

#6 Disable the Power Off Timer

When an LG TV keeps turning off, I always turn off the power-off timer.

You see, the power-off timer will turn the LG TV off automatically at a set time during the day. It turns the TV off regardless of whether you are actively watching it or not.

It is possible that someone selected and set the power-off timer by accident. So, here are the steps you need to turn it off.

  1. Press the “HOME” button on your remote control.
  2. Choose “SETTINGS”.
  3. Click on “GENERAL” then “TIME”.
  4. Then choose “TIMERS”.
  5. Select “POWER OFF TIMER” and click to turn off the option.

Are you ready to look at some of the steps we’ve seen so far in more detail? Then, take a look at this tutorial.

#7 Clear the Cache

If the fixes above haven’t solved your LG TV issues, you must clear your cache.

Your TV’s cache is a temporary storage area that stores data from apps and system processes. Over time, the cache can become corrupted or outdated, resulting in unexpected shutdowns or other performance issues.

To fix the problem, please clear your cache. Here’s how to do it:

  1. Press the “HOME” button on your remote control.
  2. Choose “SETTINGS”.
  3. Navigate all the way down to “EDIT APP LIST”.
  4. For each app, go in and clear the cache. Unfortunately, you typically need to do this app by app.

#8 Update Your Software

In my experience, you can also solve your LG TV’s power on/off problem by installing a software update.

Software updates do the following:

  • Increase the security of your LG TV
  • Improve the stability of your software
  • Remove outdated features
  • Remove bugs and prompt your system to work properly

Here’s how to perform a software update on your LG TV:

  1. Press the “HOME” button on your remote control.
  2. Choose “SETTINGS”.
  3. Navigate to “SUPPORT” or “GENERAL”. (It will vary depending on your TV model).
  4. Select “ABOUT THIS TV”.
  5. Choose “SOFTWARE UPDATE” in the dropdown menu. If available, this option will search for a software update and prompt you to perform it.
  6. Click “CHECK FOR UPDATES”. If an update becomes available, click “UPDATE”.

Fancy seeing the steps above in more detail? Then, here’s a quick tutorial.

#9 Factory Reset the TV

When fixing an LG TV that keeps randomly turning off even after trying the tips above, I always perform a factory reset.

You should bear in mind that factory resetting will remove your personalized settings. For example, it will remove downloaded apps and return all settings to their defaults.

So, please save a backup of your accounts onto a cloud storage before resetting. You should make sure you have access to all of the account passwords.

Here’s how you can factory reset your LG TV:

  1. Press the “HOME” button on your remote control
  2. Choose “SETTINGS”
  3. Navigate to “GENERAL” then press “RESET TO ORIGINAL SETTINGS” in the dropdown menu.

Would you like to look at the steps above in more detail? Then, here’s a tutorial video.

#10 Replace Faulty Internal Boards

If none of the fixes above have helped you keep your LG TV from turning off, there’s probably an issue with one of the internal boards.

For example, the power board supplies power to other components of your TV. If there’s an issue with the power board, it could result in your LG TV turning off.

While full power failure is more common with a faulty power board, a capacitor that isn’t functioning properly could be causing the TV to turn off over time. A defective capacitor can build up enough charge to turn the TV on but then slowly turn it off because it can’t maintain the charge.

In such cases, I recommend calling a professional because handling or working with the power board can be dangerous since the capacitors can retain charge for a long time.

The main board, which controls the TV’s primary functions, can also malfunction and cause your TV to turn off. Main boards typically don’t have warranties or return policies, and they are expensive. In my opinion, sometimes replacing the entire TV is more cost-effective.

However, if you call a technician, you should also mention the daughterboards, which are connected to the main board and control specific functions of the TV. Replacing daughterboards is easier and less risky than the main or power boards, costing less than $100.

You could even replace the daughterboards yourself; just ensure you’re working in a static-free environment. I also recommend using electrostatic discharge-safe bags when storing old or new components to prevent them from getting damaged by accidental static shocks.

Ensuring Your LG TV Doesn’t Turn Off Unexpectedly

Hopefully, now you know how to fix your LG TV issues.

Remember that if your LG TV randomly turns off, you’ll need to check the power cord and socket, perform a reset, inspect HDMI connections, and install available updates. Checking the remote, clearing the cache, and replacing any faulty internal board could also solve the problem.

Please check our other articles and free guides if you found this post helpful. You could even sign up to our email list.

Thanks for reading. Have a great day!


I've been helping homeowners with appliance repair since 2016. Starting out as an enthusiastic amateur, I've since worked with many Appliance, HVAC, and DIY experts over the last 7+ years. My mission is to help fix your appliances and prevent future issues - saving you stress, time, and money. Visit my author page to learn more! Read more