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LG TV Logo Flashes on and off (Causes and How to Fix)

As an LG TV owner, I know the frustration of trying to watch a show only to have the logo flash on and off. I’ve spent hours trying to figure out what was causing this issue and how to fix it. Thankfully, I was able to find a solution and I’m here to share my experience and what I learned along the way so you can get back to enjoying your TV.

Outdated firmware is usually the main cause of LG logo flashing on and off.
Faulty hardware or mainboard can also be the issue.
Update the system, do a soft reset, or a factory reset to fix the issue.
Resetting the pin code can help if you’ve forgotten it.
Force rebooting the TV can also be helpful.
If all else fails, contact LG customer service for assistance.

Why the LG Logo Is Flashing on and Off

The LG logo could appear for several reasons. Usually what happens is that the screen will flash the company’s logo for a while before turning black and going unresponsive.

When this occurs, you want to look out for the following causes for why the LG logo is flashing on and off.

Outdated Firmware

Among the common reasons is TV owners ignoring pending updates or postponing them to a later time. Manufacturers don’t recommend doing this because your appliance ends up rigged with bugs, which leads to breakdowns and malfunctions.

In other words, your LG TV will flash the logo as a way to warn you that the system requires an update. 

A good way to know for certain if this is the case would be to look out for any prior problems you’ve been having with the device too.

Possible scenarios may include issues with distorted audio or the picture not playing smoothly. After a while, the TV simply goes into demo mode (where it only shows the flashing logo).

Faulty Mainboard or Hardware

There could be an internal problem with the TV, specifically its mainboard or the hardware. If this is the cause, you may need further assistance from a technician.

First, however, you should determine whether or not the key to your issue lies in the device’s mainboard. 

After the logo flashes and the screen turns black, use an LED flashlight, such as your phone, to look and see if there’s a ‘No Video’ message displayed above.

It should be written out in purple-ish blue and sometimes you can see it without the light’s help. Regardless, this case will require someone from the LG team to come in and take a look at your device.

Make sure that you have your TV’s information ready beforehand. You’ll need to provide the appliance’s model name, serial number, and software version.

How to Fix the LG Logo Flashing on and Off

Now that you most likely know what has caused the flashing logo problem, it’s time to show you how you can easily fix it. 

Most of these solutions aren’t too technical, meaning, they won’t require you to request a service form with LG to have someone come look at your device.

Update the System

As we’ve mentioned above, system updates are pretty important, and neglecting them can cause multiple issues down the line.

In most cases, the quick solution to the flashing logo is to find the setting menu and check for any firmware updates you may have dismissed. After they’ve been installed, remember to reboot your device.

The logo shouldn’t flash once you’re done. It should appear for a few seconds before showing the standard main screen.

Keep in mind that there’s both an automatic and a manual way to have your device be up to date. Check the LG website to know which method is more suitable for your TV model and software version.

Do a soft reset

Often, simply doing a soft reset is enough to solve the issue. To do a soft reset, just remove the plug from the wall outlet and wait for at least 60 seconds before putting it back in again.

Do a factory reset

Another option you have is to do a factory reset. This will completely reset the TV to its factory defaults, so should be done as a last resort.

Here’s how: 

  1. Using your remote control, press the Home button, then select the Gear symbol
  2. Select General
  3. Choose Reset to Initial Settings
  4. Press Confirm for the pop-up message
  5. Enter your password on the screen (if you forget the pin code, you won’t be able to reset your LG TV till you reset it)
  6. Don’t unplug the TV till the procedure is finished

How to Reset the Pin Code

Since you can’t reset your LG TV if you forget the pin code, it might come in handy to know how to change it.

Thankfully, there’s a hidden code to assist people who have forgotten their pins.

This is how you do it:

  1. From the Menu setting, select Settings 
  2. Locate the Advanced Settings by scrolling through the Configuration Settings
  3. Scroll till you find the Safety page and select it
  4. You’ll see a Reset Password option (don’t press it, but just highlight it)
  5. On your remote, click channel up twice, then channel down, and channel up again
  6. Type 0325 or 0313 in the pop-up window
  7. In the screen that appears next, type 0000
  8. You should be able to modify your password now

Force Reboot

You can also try to force reboot/restart your TV to fix this issue. First, turn your TV on and then unplug it from the main power source. 

After that, press and hold the power button for 10 to 15 seconds before releasing it and turning on your TV. 

To Sum Up

Read more: LG TV making a clicking sound

We hope our guide entitled “LG TV logo flashes on and off (causes and how to fix)” has helped you with your pressing technical problem so you can go back to leisurely watching your favorite shows now.

The main takeaway here is that by properly diagnosing the cause of the problem, you can pick a solution that’ll resolve it accordingly. If all else fails, that’s what LG customer service is for!

Contact LG support, fill out a form with your product’s information, and a professional will take care of it.

Read more: LG TV picture off center