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LG TV Screen Turned Grey (Causes and How to Fix)

As an LG TV owner, I’ve been extremely frustrated when my TV’s screen suddenly turned grey. I was perplexed and didn’t know what to do. After doing some research and testing, I’m here to share how I solved this issue and what other solutions I discovered.

In this blog post, I’ll be talking about the causes of an LG TV screen turning grey, and how to fix it. Hopefully, this will provide some helpful insight and make your TV viewing experience a better one.


  • An LG TV screen can turn grey for many reasons, including unsecure output connection, firmware issues, and board problems.
  • To fix the issue, first inspect the ports and cables, check the colored cable connections, do a soft reset, and do a factory reset.
  • If you forget the pin code, you can reset it by following a hidden code.

What Causes an LG Screen to Turn Grey?

The bottom line is that if your screen is grey, your TV isn’t getting any picture input. This can be a result of many reasons, most of which can be easily resolved once identified.

A few other causes are quite technical and may require you to access the main board of your LG device. That said, you shouldn’t resort to this solution unless everything else fails. 

We also recommend having a professional handle the more technical fixes as well. Only if you have the appropriate knowledge for it, should you consider tampering with your TV.

So, with our guidelines in mind, let’s get into what causes an LG TV screen to turn grey?

Unsecure Output Connection

If your TV is linked to an external display source, such as a laptop, there might be an issue with the connection.

You can determine whether or not this is the case by unplugging the external device first and then turning the TV screen on again. If the display shows normally, then there’s no problem with your TV, but rather the source.

Some users link their TVs to multiple outer sources, so it can be difficult finding out which one is the cause of the grey screen. The best way is to connect each one separately and figure it out. 

In case they all end up not working, then there’s a problem with your TV’s ability to read other devices. Often, it’s just because you’re using the wrong port to connect both sources.

Firmware Issues

Firmware refers to the inner working and systems of your TV. They’re susceptible to overuse and can be damaged easily when users don’t handle their TVs properly.

For instance, we’re all guilty of postponing important updates to a later time. This isn’t ideal because your appliance ends up rigged with bugs, which may appear as a sound or a display issue.

Since such problems appear suddenly, it can be quite hard trying to determine whether or not negligence is the reason why your TV screen is grey. Check for pending software updates if you can still access the display settings and then install them.

In case you can’t, it’s recommended that you seek a technician instead. Make sure that you know your TV’s model name, serial number, and software version before you seek LG customer service.

Board Problems

Another technical problem, besides firmware issues, could include your TV’s power supply board failing to function properly.

Unfortunately, this can be a major issue and will require assistance from a technical point of view. 

Since many TVs nowadays come with multiple power supply boards, if one of them stops working, the screen immediately turns grey.

A good way to tell if this is the cause of your grey screen problem is to look out for other display alterations, including static or the screen turning completely black. 

So long as the device’s audio is working, but its picture isn’t, then the issue lies in the board.

How Can I Fix My LG Screen Turning Grey?

Now that you’re likely aware of what caused your screen to go grey, it’s time to tell you how you can quickly fix that issue so you can go back to watching your favorite shows.

Inspect the Ports and Cables

The first course of action is to make sure that everything is properly plugged in if you’re using an external source. Double-check that you’ve picked the right cable to link them together as well.

In case the problem persists, then go over your TV’s settings and confirm that you’ve chosen the right output display source.

Check the Colored Cable Connections

You’ll find multiple colored cables at the back of your TV screen, one of which is responsible for the picture display. Typically, the cable that’s labeled ‘video’ is the one you want to look out for. 

Ensure that it’s correctly secured and there hasn’t been any damage to the wire. If you find that the board is fried or broken, consult with the LG support team as soon as possible.

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

Final Say

Read more: LG TV won’t play video

This simple guide focused on the issue of your LG TV screen turned grey (causes and how to fix).

Fortunately, most cases are not so technical that you’ll need to rely on LG services to resolve them for you. By running a proper diagnosis first, you’ll troubleshoot the underlying issue successfully and be able to solve it fast.

We hope we helped you do that!

Read more: are Samsung Soundbars compatible with LG TVs?