My LG TV Turns On Then Off Immediately [Fixed]

You are finally getting comfortable on your couch prepared with a few snacks for the movie night and go ahead to turn on your LG TV. 

The screen turns on and then instantly it turns off again. Does this happen to you? If so, don’t worry you are not the only one. 

This is a common occurrence for many LG TV users whereby the television switches on and immediately goes off. 

This article will explain the reasons for this problem and provide practical advice on how to carry out effective troubleshooting to remedy it.

Understanding the Causes of the Issue

Before providing step-by-step instructions on fixing this obnoxious bug, let us first understand what potentially triggers the occurrence of your LG TV turning on and then off immediately after the period. 

Such understanding can help in diagnosing the problem better.

Power Supply Issues

An unresponsive power supply is amongst the many reasons that may cause a TV to power on and off at once. 

A power supply unit (PSU) is primarily used to convert the wall outlet’s AC supply into the appropriate DC voltage to operate the TV set. 

If the power supply unit is experiencing issues, it is likely that the television set will turn on for a brief moment but then turn off automatically whenever it is switched on.

Faulty Remote Control

There is an interesting phenomenon, which is, that a remote control that does not work properly can also contribute to turning off and on your LG TV smart television. 

In some instances, the buttons can get jammed or the remote control may transmit a signal continuously to the television leading to strange behavior.

Software Glitches

Similar to all other electronic gadgets, LG TV also has some installed software that at times tends to perform poorly. 

This article explains one of the most recurring problems seen in the operating systems is the abnormal shutdown of the LG TVs, only a few seconds after powering up.

Overheating

Some of the models of LG televisions have integrated safety features that initiate shutdown when high temperatures are detected. 

This may result when the television set is mounted in a poorly ventilated area or when it is crammed in a tight space.

Bad HDMI Connections

HDMI port reach is valuable for external devices such as gaming devices as well as streaming devices. 

TVs may shut down as a protective measure when they misconstrue signals due to poor or loose HDMI connections.

Faulty Capacitors

Capacitors, located in the television’s power supply board, are responsible for the storage of electrical energy. 

If they get damaged or “bulge” due to some physical stress, they can lead to power problems in the television and the TV might switch off suddenly.

Defective Internal Components

As earlier stated, the internal parts including the main board or the motherboard can also fail and exhibit the same on-off pattern. 

In the case that a manufacturing defect or any sort of impact is sustained, the television may not be able to keep the power state stable.

External Interference

On some occasions, the television may be affected by other external factors such as said, magnetic or other electromagnetic interferences by some active devices surrounding the TV.

Troubleshooting Steps to Fix the Problem

Now that we have gathered the possible causes, let us find out how we can solve this problem. 

Here is a well-prepared account that offers a step-by-step procedure for resolving the issue.

Step 1: Check Power Supply Connections

Inspect the Power Cable: 

Carefully check if the power cable is securely attached to both the TV and the wall socket. 

If the TV does not have a strong connection, there might be loose wires that can lead to high connection resistance.

Test the Outlet: 

Try plugging directly into the same outlet a different piece of equipment to see if it works. 

If the outlet does not have any fault, the cupboard can be blamed.

Use a Different Power Cable: 

It is possible to have a spare lead, a lead that fits LG TV perfectly and therefore it is wise to use. A broken electric cable leads to power loss.

Step 2: Examine the Remote Control

Remove Batteries: 

Remove the batteries from the remote and check if the TV works without the remote.

Clean the Remote: 

In such instances, dirt and debris can make the buttons get stuck. 

Be sure to clean your remote thoroughly, including the area around the buttons.

Check for Interference:  

Make certain no objects are blocking the path between the remote and the TV set.

Step 3: Restart the TV

Perform a Soft Reset: 

Disconnect the power cable of the TV from the wall socket and leave it sidelong for about 10-15 minutes. This permits any excess power to be drained. 

After a minute or two, connect the cable back to the power source and switch on the TV.

Lg Tv Screen Goes Black Randomly [Fixed]

Step 4: Check for Overheating

Ensure Proper Ventilation: 

Ensure that the television unit is positioned in such way that the barrier does not restrict air movement. 

Avoid keeping the unit in a capsule of nature.

Inspect for Dust Buildup:  

The inside of the television set may have trapped fluffs and remove the obstructions in order to maintain the required airflow around the unit. 

Use the appropriate nozzle to deliver compressed air to the vents and sockets.

Step 5: Inspect HDMI Connections

Disconnect HDMI Devices:  

Disconnect all HDMI accessories connected to the TV and test if the TV displays the picture without being connected to any other devices.

Inspect HDMI Ports: 

Look for any possible damage to the HDMI ports on the television and the devices. If needed, clean these ports.

Step 6: Update Software

Access Settings: 

First power on the TV. Use the settings option within the menu. 

However, if you are unable to navigate on the TV for vast periods, try the remote after soft resetting the TV.

Check for Updates: 

You may be able to locate the option Login into Preventive Maintenance “Software Update”.

If you find one, install it. This may fix software bugs.

Step 7: Perform a Factory Reset

You may likewise need to perform a factory reset.

Access Settings: 

Using the remote control, go to the settings menu.

Select ‘General’: 

Go to the bottom of the screen and look for the ‘General’ option.

Choose ‘Reset to Initial Settings’:

After that, go ahead and press the button to proceed with the process. Remember, this will delete all custom settings. This will also delete all saved data as well.

Step 8: Seek Professional Help

If all these steps do not work and the TV won’t stay on, it is advisable to see a technician or call LG support directly. 

There may be several hardware problems needing advanced repair.

Personal Anecdotes

I think it is time I tell you a personal story and draw some lessons from it. I remember about 2 months ago when I had my LG TV mistake. 

It was a movie night and my family was present for the occasion, as we always do on Saturdays. I had had enough fun and was now watching my favorite movie. 

So, as soon as I turned my TV on, the picture came on for about a second then completely went out again.

There it was, the disappointment I constantly dreaded, all hope was lost. After all, so much effort was put into this moment, why should I just let it all go? 

I indeed chose the more aggressive approach, but hey, it worked. I removed the plug, allowed it to cool down for what seemed like hours, and put it back in. 

And lo and behold, it did not turn off! Success at last! Okay, no problem. The issue has to be addressed in the long term.

I was able to connect the dots and proceeded to execute what I had only seen in videos before – troubleshooting. 

I probably cursed every intelligent person on the planet who was behind the design of the power supply module.

But I came to appreciate the power supply module for one thing – giving me a crucial life lesson: 

Two attributes that I had once thought were overrated – patience and persistence, were in reality key to success.

Frequently Asked Questions (FAQs)

Why does my LG TV turn on for only a couple of seconds and then switch off?

The most common reasons include issues with the power supply, broken components, or software failure. It is helpful to proceed with a step-by-step approach to troubleshoot the issue.

What should I do if my LG TV is completely off and won’t turn on?

A: If your TV doesn’t turn on at all, double-check power supply connections, test the outlet, and try using a different power cable. If there is no success then you may need to seek professional help.

Are external devices capable of making my LG TV turn off?

Yes, other devices that are connected through HDMI or other inputs may transmit pertinent information causing malfunction of the TV making it turn off.

Is performing a factory reset on the TV an advisable option, can any harm result from it?

Yes, factory reset is an advisable option with no foreseen harm but it will result in loss of all custom settings and preferences. It is advisable to save files with important data.

What can I do to ensure that my LG TV does not get hot easily?

The right placement of the TV is essential to ensure that there is enough space for air circulation. Dusts should be cleaned from vents and the TV should be placed close to walls.

Conclusion

It can be quite annoying when you have a problem with your LG TV and you are just about to watch your favorite television shows or films. 

As long as you are aware of the possible reasons, the issue of LG TV immediately powering on and off can be solved effectively by following the steps in the troubleshooting guide above.

Always remember to have patience with technology as it can sometimes turn out to be temperamental. 

When in doubt and all other things have failed, you should contact the specialists to assist you. You simply want to sit back and enjoy your entertainment undisturbed.