LG Keeps Turning Off and On Itself (Best Answer)

LG TVs have sharp graphics and built-in speakers that improve the viewing experience for movie and TV show fans. However, if your TV begins to malfunction, you may lose access to that exceptional streaming quality. LG customers frequently experience a specific issue: a Samsung TV that repeatedly turns on and off (or refuses to turn on and off).

LG Keeps Turning Off
LG Keeps Turning Off

LG Keeps Turning Off, that refuse to turn off has a problem with the remote control or the motherboard. However, if your television continues to power down on its own, there could be a wiring issue or you may need to reset it. To resolve the issue, disconnect the TV, disable timers, or delete the cache on your LG TV.

This article will explain why your LG television keeps turning on and off by itself. We’ll also walk you through troubleshooting steps to get your LG TV and sony tv back up and running!

Troubleshooting: Issues on LG Keeps Turning Off and On Itself

Power surgeIf your LG TV keeps turning off and on by itself, it could be due to a power surge. If you have recently experienced a power outage or brownout, it’s possible that your TV’s power supply was damaged. Try resetting your TV’s power supply by unplugging it from the wall for 30 seconds and then plugging it back in.
OverheatingIf your LG TV is overheating, it may turn off and on by itself as a safety precaution. Make sure that your TV has plenty of ventilation and that it’s not being blocked by anything. You can also try moving your TV to a cooler location.
Loose power cordIf the power cord to your LG TV is loose, it may not be getting enough power and could cause the TV to turn off and on by itself. Check the power cord to make sure that it’s plugged in securely. You can also try wiggling the power cord to see if that makes a difference.
Firmware issueIn some cases, a firmware issue can cause an LG TV to turn off and on by itself. If you’re experiencing this issue, you can try updating the firmware on your TV. You can download the firmware update from the LG website and then follow the instructions to install it.
Hardware issueIf you’ve tried all of the above solutions and your LG TV is still turning off and on by itself, it’s possible that there’s a hardware issue with the TV. In this case, you will need to contact LG customer support for assistance.

Video: How to Fix LG LED TV Turning OFF-ON By Itself

Fix LG LED TV Turning OFF


The SIMPLINK settings on your LG TV may cause it to turn on automatically. SIMPLINK is a feature that allows you to use your television’s remote control to control the basic functionality of other devices. SIMPLINK also connects your television’s features to other technological devices.

LG Keeps Turning Off

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If the Auto Power Sync feature in the SIMPLINK settings is enabled, turning on a device connected to your television also turns on the fire started. As a result, according to this link, the television appears to be malfunctioning while operating.

SIMPLINK can be deactivated by following the steps outlined below.

  1. Press the Home button on the remote control.
  2. Go to the Settings section.
  3. Transfer to General.
  4. SIMPLINK should be selected.
  5. Turn off the Auto Power Sync option.

If SIMPLINK isn’t the issue, it’s most likely your television’s main control board.


Before attempting to replace the motherboard on your unit, keep in mind that LG customers frequently misdiagnose this issue. As a result, it’s best to seek professional help diagnosing and repairing your panel.

LG TV Powers On and Off Intermittently?

Using a Timer, I can Automatically Turn On and Off My LG TV

The timer setting is frequently to blame when a TV turns on and off randomly. If your TV has a detachable power wire, double ensure that it is firmly inserted into the rear of the device. Verify that the TV’s power cable is firmly connected to the wall socket or power bar.

If you suspect that your motherboard is causing the automatic powering problem, look for flashing images, blue screens, a sluggish TV, or a lack of recognition for connected devices.

If you notice any of the following additional symptoms, perform the following tests to determine whether the motherboard is defective before attempting repair:

  • Disconnect the power cable from the TV and any external devices.
  • Hold down the power button on the television for fifteen seconds.
  • Allow one to two minutes.
  • Reattach the power wire.

If the problem persists, the motherboard of the television should be replaced. Replace the board with an OEM replacement and have an electrician install it. However, if you have a flat screwdriver, needle-nose pliers, and a Phillips screwdriver, you can replace the control panel standby mode.



Here’s how to replace the motherboard once you’ve gathered the necessary tools:

  1. Remove the backplate.
  2. Disconnect the cables from the damaged motherboard manually.
  3. To unlock the wire connectors, use needle-nose pliers to squeeze them.
  4. Remove the faulty mainboard.
  5. Secure the new control board to the chassis with a screwdriver.
  6. Reattach all cables. Remember to close the top tab after reintroducing the ribbon into the connector.
  7. Close the back cover.


The power cord on your LG system may be frayed if it shuts down on its own. Make sure the power cable is securely connected as your first “fix.” It also helps to confirm that the wire is not physically damaged.

Once you’ve determined that the wire is secure, the problem could be with the equipment connected to your television rather than the television itself.

When the batteries in some HDMI-CEC systems run low, the peripheral causes the television to intermittently turn off. If you have one of these devices connected, you should consider changing the batteries to resolve the problem.


The timer function on an LG television is the only thing that causes it to turn on and off intermittently. To determine whether this is the source of your problem, perform the following steps:

  • Press the Smart button on the TV remote.
  • Go to the Settings menu.
  • Enter Time after selecting it.

These steps will take you to the timer settings, where you’ll find three options:

  • On-time: Turns on the television at a predetermined time.
  • Off time: Turns off the television on a set schedule.
  • Sleep timer: Turns off the television automatically after a predetermined amount of time.

Disable the Off and On timers to prevent your television from rebooting repeatedly.

If none of the preceding solutions worked, reset your LG television. To begin, unplug the television from the wall outlet. After that, wait 30 seconds before reconnecting the power cable to the television.

If your television continues to power on and off intermittently, try deleting the cache.

How Do You Delete the Cache From Your LG TV?

If your problem isn’t caused by a faulty timer, your television is almost certainly suffering from cache overload, the most common problem on televisions that are heavily used for video streaming.

Delete the Cache From Your LG TV
Delete the Cache From Your LG TV

For some, an error message may appear indicating that the TV requires more memory before shutting down. Even if you haven’t seen this post, clearing your cache is still a viable solution to your problem.

Follow the steps below to clear the cache on your LG television.

  1. Using the remote, navigate to the Settings menu.
  2. Go to the User Menu.
  3. Disable Quick Start Plus.
  4. Disable the SimpLink configurations.
  5. Disconnect the LG unit from the wall socket.
  6. Wait approximately 30 seconds.
  7. Connect the power cable.

To avoid this problem in the future, always shut streaming apps down after you’re done watching.


When the LG television turns off automatically but still displays a blinking red light, there could be a problem with the television’s main board. Follow the steps outlined above to replace your control board.

However, before you do so, take the following steps to help you resolve your problem:

  1. Unplug the power supply.
  2. Allow ten minutes for this to happen.
  3. Hold the power button on the television for 60 seconds.
  4. Connect the power wire.

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When your LG TV won’t turn off, the most obvious solution is to turn it off by unplugging it from the wall socket.

If, on the other hand, the built-in power button turns off the television but not the remote, you can try troubleshooting the remote.


LG remotes are available in two varieties: magic and regular. You can tell what type of remote control you have by looking for the following signs:

  1. A trackball is included with the Magic remote controls. The mapping tool appears on the television screen in the same way that the cursor of a mouse does.
  2. The standard configuration of remote controls is flat. There is no movable mouse on the television monitor.

As the first step in troubleshooting, replace the batteries. This procedure is the same for both remote versions. When replacing batteries, be careful not to mix old and new batteries. This could be dangerous.

You can also turn off the TV by making sure there are no obstructions between the controller and the device’s infrared sensors. This sensor is typically a flat panel that illuminates when the remote communicates with it.

An infrared light beam performs the majority of tasks, such as powering down. Check that nothing is in the way of communication with the television.

If none of the above troubleshooting tips helped, there’s a good chance you have a broken metal component, such as a:

  • Faulty LED strip
  • Weak capacitors
  • Broken power supply
  • Loose wire connections Samsung


Does your LG TV turn off by itself? Nothing is more infuriating than an appliance with a mind of its own. Fortunately, I am confident that the ten tips in this article have assisted you in resolving this issue and returning to uninterrupted TV viewing.

Has this article been useful to you? Then go ahead and read some of our other articles and free guides. You could also join our email list.


Why is my LG TV randomly turning on and off?

A TV that turns on and off intermittently is usually caused by a timer setting. 1. Check that the power cord on a TV with a removable power cord is securely plugged into the back of the TV.

Why is my LG TV constantly flickering on and off?

Try a different cable (usually HDMI), as your wire may be malfunctioning (or try the same cable on a different device and see if the problem persists). Examine the video output settings on the device that is causing the issue. Image flickering can be caused by incorrect resolution or refresh rate settings.

Why is my television turning on and off every 5 seconds?

A Smart TV, like a computer, can become infected with viruses, causing it to shut down after 5 seconds. You run the risk of contracting a virus if you browse the internet and download files from your Smart TV. To see if a power reset will help you get rid of a virus, try it.

How do you repair a smart TV that keeps shutting down?

Unplug the TV for 30 seconds before plugging it back in, and then plug it directly into an outlet that you know works properly. This is known as a’soft reset,’ and it should re-calibrate the television.




CEO and Networketing at Sycamorenet | + posts

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