LG OLED CX Turns Off Randomly? Here’s a Quick Fix!

Imagine being happy to receive a TV that supports all applications and can be used for gaming with an Xbox or Playstation connected.

However, when it starts acting up and doing weird things like automatically turning off, the excitement doesn’t last long. 

Many LG OLED CX users have reported the issue in the past, which I found out after I encountered the same issue and started researching it on various forums, and social media sites, and contacting LG support.

While playing Destiny 2 on my LG CX connected to my Xbox One, I suddenly noticed that the TV was turned off by itself. It also started happening with streaming apps such as Netflix, Hulu, Prime Video, and others where they randomly shut down. 

Although it was a quite weird issue, and I hadn’t expected it to happen with an all-arounder like the LG CX, I decided to handle it by myself since I have experience with both software applications and TV hardware.

My experience has taught me that it isn’t related to any hardware fault, which is pretty rare with this kind of OLED TV. I suspected it correctly and after reading other users’ experiences the culprit was the internal glitch of the TV itself.

As well as helping you to fix your LG CX TV that turns itself off randomly while playing games and using streaming applications in this guide, I will also explain why it’s happening and how you can prevent it from happening again.

Why does my LG CX TV keep turning off?

When it comes to the random turn-off on older TVs, which usually happened due to hardware failures like a faulty mainboard, TCON, or socket, it doesn’t apply to the latest OLED TVs like the LG CX due to their different technology.

Nevertheless, faulty power sockets or power cables cannot be ruled out as a possible cause of TVs turning off randomly.

First and foremost, inspect the sockets and cables, later, we can move on to the other main things that might be causing your LG CX TV to randomly turn off.

Here are all possible causes of LG OLED TVs shutting off randomly:

  • Firmware Glitch
  • Power Cord Issue
  • Internal Incompatible Settings
  • Sleep Timer

Most of the time, the Firmware glitches and the incompatible internal settings lead to your LG OLED TV randomly turning off, which can be easily fixed at home by following some troubleshooting steps such as updating the firmware, tweaking the internal settings, etc., which are available on the official website.

As we are now aware of the possible causes, let’s move to the main section where you will learn about the different methods you can use to find out and fix this problem.

How do I stop my LG OLED TV from turning itself off?

Due to multiple reasons, there are different ways through which this issue can be caused, and this is why it is important to go through the multiple methods, so you know both what caused the issue, as well as how to fix and prevent it from happening.

The sudden shut-off of the TV while playing games on Xbox is mostly due to a firmware glitch where the instant game response (VRR) needs to be turned off and the firmware needs to be updated manually.

However, when the same thing occurs when watching streaming applications, the cause can be anything from an automatic timer to a CEC/HDMI or Simplink error, and the reasons for it vary from application to application.

It is possible to identify the real culprit and resolve the issue using a variety of different methods, regardless of the situation. The following are different methods you can use to resolve the issue.

Inspect Power Cord

Let’s take a look at some of the basics which are often overlooked when troubleshooting TV problems.

As a rule of thumb, random TV shutdowns happen as a result of the TV not getting the power it needs to work.

There are times when damaged or faulty cables can prevent the TV from getting the power it needs, resulting in the TV turning off.

It is therefore crucial that you inspect all the cables connecting your TV for visible damage along their entire length.

Furthermore, most cable problems occur when the television is plugged into a faulty wall socket.

Rather than disregarding it, if you have plugged the TV directly into a plug, try switching to a different plug and see if the TV still turns off by itself.

It would also be a good idea to try connecting the surge protector to the other sockets if you are using one.

Turn Off QST+ or Simplink Settings OFF

From this point on, follow the troubleshooting method one by one without omitting any part, and check if your TV still turns off after each method.

LG TVs have a feature called Simplink, or Quick Start +, that allows you to put the TV on standby, similar to hibernating a computer.

This can be useful when you do not want to wait for the TV to start up before you can watch something.

Often, it gets glitched because of internal conflict, which causes the TV to automatically turn off.

In order to turn off Quick Start+ and Simplink, follow these steps:

  1. On the remote control, press Home or Smart.
  2. Select General from the Settings menu.
  3. Here, The Quick Start feature can be turned off by selecting it and unchecking it.

Turn Off Auto Timer/Sleep Timer

LG TVs have the same auto-power-off feature as any other TV, which turns your TV off when you are not using it.

Note: LG support states that intermittent power-on and power-offs are usually caused by timer settings.

As a matter of fact, this feature typically saves power, but it can also turn the TV off on its own if it believes it is not being used.

Turning off Auto Power Off is as simple as:

  1. On the remote, press the Home or Smart button.
  2. Click on General in the Settings menu.
  3. Now, Turn off Auto Power Off by selecting it and clicking the off button.

Wait a few seconds after turning off the setting and check if the TV turns off.

Secondly, LG TVs have another feature called Power Off Timer which automatically turns the TV off after a pre-set amount of time. It works similarly to Auto Power Off.

So, If your TV is turning off on its own, make sure this option is turned off.

In order to accomplish this:

  1. On the remote, press the Home or Smart key.
  2. Select Time in Settings.
  3. Off Time should be set to off.

Turn Off Instant Game Response

When your LG CX TV turns off automatically while playing a game and your Xbox is connected, you need to turn off Instant Game Response (VRR) as it happens due to a firmware bug. In the meantime, you can fix the issue by disabling Instant Game Response until a firmware update is available that will fix the issue.

Here’s a helpful video, which demonstrates it:

If you have done this, keep your eyes on the official LG TV website for firmware updates so that as soon as they are available you can install them on your TV.

Cache Overload 

In most cases, when LG OLED TVs turn off while using apps, it is caused by a cache overload, which often causes the TV to crash, restart or turn off while it is using apps.

TVs have limited internal storage, which can quickly fill up when you update apps and install new ones.

Often, these apps create caches of files that they need to access frequently.

As soon as the TV’s storage space runs low, it will stop working as expected and turn off to free up memory.

To fix this, you must clear the browser and app caches in your LG TV’s storage.

To do this, follow the steps below:

  1. On your LG remote, press Home or Smart.
  2. Now, You will need to launch a web browser or web engine.
  3. After that, Select Settings from the menu.
  4. Here, Clear browsing data, and confirm the prompt.
  5. Again, press the Home or Smart key and then select Settings.
  6. Select the Application Manager option.
  7. Click on each app in the list, and then click on its Storage settings to clear its cache.
  8. Do this for all the apps on your TV.

Update TV Firmware Manually

Earlier in this article, I mentioned that LG CX TVs that turn themselves off automatically while playing games or playing Xbox is caused by a bad update that needs to be fixed. 

Having encountered this problem, I contacted LG Support and they confirmed that there is a large number of users within the LG community who have experienced the same problem and that it will be resolved in the next firmware update. 

In light of this, it is a good idea to check for new updates on the official LG website to get the latest firmware and manually update it.

Factory Reset 

If you’ve exhausted every other option in this guide, you can also perform a factory reset to fix the issue, but only after you’ve tried everything else.

After resetting, you’ll have to sign back into all your accounts and the TV will be back to how it was when you bought it.

All apps that were removed by the reset might also need to be installed again.

If you want to factory reset your LG TV, follow these steps:

  1. On your remote, press the Home or Smart button.
  2. Choose Settings.
  3. Then click Reset to initial settings under General.
  4. Once the reset prompt appears, confirm it and wait for the TV to restart.


Whether your LG CX turns itself off while playing games, connected with Xbox, or when streaming through applications, the unpleasantness is equal, luckily it is not related to any hardware issue if you started thinking of that. 

In the above guide, I have shared multiple methods through which you can get it sorted, I hope you like it and to wrap it up again, here’s what you can do to fix  when your LG CX turns off itself automatically:

  • Replace the power cord and socket
  • Clear cache
  • Turn off the Simplink feature
  • Disable the auto/sleep timer
  • Turn Off  Auto Power Sync 
  • Turn off Instant Game Response
  • Update Firmware

Why Does My LG OLED CX Turn Off Randomly While Playing Games?

There is a glitch in firmware that is causing most LG CX TVs to shut down automatically. While the firmware is being updated, you can turn off the instant game response in its settings and it will work as it should.

How To Stop My LG CX TV From Turning Off By Itself While Playing Xbox or Playstation?

The best way to avoid your LG OLED TV shutting itself down while connected to Xbox or Playstation is to turn off the instant game response to bypass the firmware issue which causes your TV to shut down automatically while connected to Xbox or Playstation.

Why My LG Oled CX Shut Off While Using Apps? 

When the LG OLED CX turns off automatically while streaming through applications, it can be either because of an automatic timer, a Simplink, an HDMI/CEC conflict, or a cache overload that is being caused by the application. You can clear the cache on your TV or perform a hard reset in order to get this problem sorted out easily.