13 Easy Ways To Fix Black Screen On LG TV(+Caveman Tip)

Whether it’s the affordable NanoCell models or the stunning OLED TVs, LG televisions are always top-notch.

However, like other electronics, they can develop a few issues. Some potential users are particularly concerned that LG TV screens can go blank all of a sudden.

How do I fix the black screen on my LG TV? Fix remote controller issues, unplug the TV from the wall outlet for 60 seconds, plug it in a different outlet, and ensure proper cable connection. You should also ensure the backlight and power supply board are in their best working condition. Disconnect and reconnect the motherboard, try oven baking it.

So, you can fix the black screen with minimal effort if you acquire the right skills. Keep reading for all you need to do this.

Check out the list of the Best Streaming Devices on Amazon now!

Why is My LG TV Screen Black?

There are several reasons your LG TV screen could be black.

Here are the common ones you need to know to avoid bad experiences when watching or turning your television on:

  • Remote not working: A black screen could be an indicator that your LG TV has been turned off. However, if it’s producing sound, that’s not the case.
  • Check the remote. In either case, the first thing you should do is to establish whether the remote is working. To do this, power the television on using its power button instead of the remote. If that solves the issue, but the remote still doesn’t work, it has a problem.
  • Issues with the TV’s firmware: If there are no remote issues, check whether the power indicator light is on. If so, software issues could be the underlying cause of the problem. If you don’t follow the recommended way to shut off the TV, the TV software may experience technical difficulties. The inability to install new updates in time is another possible reason. In some cases, software issues can emerge without any known reason, but you can solve them.
  • Failure in the TV’s power supply board: A wide variety of power supply issues can hinder the normal functioning of the screen. Failure in the power supply board is a major problem. The TV might have several power supply boards. So, a failure in one of them could interfere with the ability of the screen to function normally.
  • Connectivity issues: A faulty HDMI cable can cause lots of issues with your TV display. It could have been damaged or malfunctioned due to tear and wear. Alternatively, the HDMI cable and power cables could be loose.
  • Backlight issues: If your LG TV is using an LCD screen, you should consider whether the backlight is functional or not. Use a flashlight to try to see if images appear in the background. If you are experiencing backlight issues, you’ll see the pictures if you do this in a dark room.

Why Does My LG TV have Sound But No Picture?

  • Your LG TV can have sound but no picture due to software-related complications. Depending on the nature of the problem, it can cause the TV to have sound but no picture, picture but no sound, or none.
  • Since HDMI cables deal with display, you are less likely to get quality images if damaged or malfunctioned. The same problem can occur if the cable is loose.
  • Backlight issues are another major cause of this issue. This can be a concern if your LG TV uses an LCD (liquid crystal display). Please remember that the advanced OLED (organic light-emitting diode) TV doesn’t use a backlight to transmit light.
  • If the LG TV’s input source is damaged or not turned off, the screen can turn black too. The same can also happen if the source is not connected to power.

How Do I Fix the Black Screen on My LG TV?

To fix the black screen on your LG TV, you can do the following:

1. Fix Remote Controller Issues

First, try using the power button to power on the TV.

If that removes the black screen, you can fix the problem permanently by following these non-technical steps:

  1. Change your remote controller’s battery.
  2. Press all the buttons on your TV a few times to if one of them did not get stuck.
  3. Try using the remote to power the TV on.
  4. If step 3 fails, replace the remote.

2. Unplug Your LG TV

You can solve many LG TV software problems by doing this:

  1. Unplug the TV from the wall outlet.
  2. Wait for 60 seconds.
  3. Plug it in again and power on the TV.

If it works, that’s great. If not, move on to the next step.

3. Reboot your TV

Unplug your TV again and hold the power button on your remote for about 30 seconds. Then plug the TV back in.

4. Plug the TV into a Different Wall Outlet

It could be that the outlet is bad and hinders the free flow of current into the device.

So, you can troubleshoot whether this is the problem and fix that by following these steps:

  1. Plug the TV into different outlets.
  2. If it works, call a competent electrician to address the issue or use the functioning wall outlet.

5. Check all the Cables Plugged into Your TV

Ensure you have quality power and HDMI cables. If the power indicator light is off, the power cable could be the problem.

You can try testing these cables on another TV to see whether they work.

Change the faulty ones even if they appear to be in the right physical state. They could be interfering with the current flow.

Also, make sure that your cables aren’t dirty or dusty, which can significantly hinder the connection and potentially cause the black screen issue.

Get a can of compressed air and blow it into the HDMI socket to clean it out.

On top of that, you can apply a contact cleaner to the HDMI plug which will clean the contacts in the HDMI socket when inserted in.

6. Select the right Source(If Applicable)

In some cases, you still will be able to access the settings on your TV.

Make sure to select the correct input device by clicking the “sources” button on the remote.

Select the source that you know is sending signals to the TV.

Most of the time it should be set to a TV source.

To do that, go to Settings>Source>TV. If the problem still exists, then move on to the next step.

Also, make sure the TV is set to the same source as your external device.

7. Switch the HDMI input(If Applicable)

In some cases, you still will be able to access the settings on your TV.

This is a simple thing to experiment with, yet it can help to tackle our issue.

If, for instance, your TV was using HDMI 1 input, try switching it to something else and see if it works.

8. Check the Backlight and Power Supply Board

Check the backlight if you are using an LCD screen since it uses the backlight to enable you to see images.

In order to do this, turn on your TV first.

Next, take a bright flashlight and hold it 1 to 2 inches away from your screen.

If you can see an image where the flashlight beam hits the screen it means your backlight is broken.

In most cases, unless your TV is new and expensive, there is no point in trying to repair that.

Consider upgrading to a new smart TV.

If the power supply board is damaged, replace it.

If your TV’s physical components are in the right working order and none of the tips above seem to work, it’s time to reset the device.

9. Factory Reset your TV( If Applicable)

In some cases, you still will be able to access the settings on your TV with the black screen issue affecting just your viewing experience.

We are moving closer to the final troubleshooting tips you can apply, with factory resetting being one of them.

Before you proceed, remember that this will erase all the stored data on your TV, so it’s best to back up any files that you don’t want to lose.

  1. Go to Settings.
  2. All Settings.
  3. General.
  4. Reset to Initial Settings.
  5. Click OK to begin the factory reset process.

10. Talk to Professionals

If you’ve tested all the options, the only thing left to do is to try contacting LG Support directly and see if they can offer any viable solution that will suit you.

11. Unplug the Motherboard

Now we are slowly getting more desperate, but also more creative, so it’s time to get your screwdrivers, my friends!

Follow these simple steps:

  • You will need to carefully unscrew all the screws from the back of your TV.
  • Then locate your TV’s motherboard(there is a picture below) and disconnect all the cables and ribbon cables that are attached to it.
  • Take the circuit board out.
  • Make sure all the dust, if there is any, is gone and your motherboard is clean.
  • Place the motherboard back into the TV.
  • Make sure you plug all the cables back in properly.

12. Heat up your TV’s Motherboard

This is our secret caveman tip.

I know it sounds a bit extreme, but if you found yourself reading that far along into this article and nothing has helped you so far, you don’t have that much to lose at this point.

So why don’t we give it a go?

First of all, we need to get to your TV’s motherboard.

  • For this, you will need to carefully unscrew all the screws from the back of your TV.
  • Then you will need to locate your TV’s motherboard and disconnect all the cables and ribbon cables that are attached to it.
  • Take the circuit board out.
  • Take a piece of cardboard to match the size of your motherboard.
  • Put your motherboard on the cardboard.
  • Cut a piece of tin foil big enough to cover all the motherboard.
  • Place it on top to protect your motherboard from the direct heat of the oven.
  • Preheat your oven to 385 degrees Fahrenheit.
  • Place your motherboard in and leave it for 10 minutes.
  • Then turn off the oven, open the door halfway, and let it cool naturally.
  • Once it completely cools down, reinstall the motherboard.
  • Make sure you plug all the cables back in properly.

Fix LG TV black screen

Chances are this will be just a temporary solution, but it will still buy you some time while you are browsing for a new TV.

But who knows, it can be a temporary solution.

13. Get a new TV

As you can see it’s the saddest and the final recommendation we can possibly come up with.

Assess the costs and the headache you will need to go through to make your current TV work.

Is it worth it? Sometimes getting a new TV will ultimately be a better solution.

How Do I Reset My LG TV with No Picture?

Contrary to popular belief, there are several ways to reset your LG TV with no picture.

Here is the easiest and most effective way to do it:

  1. Turn off your TV from the wall outlet
  2. Press the TV’s power button for 30 seconds (This drains any power in the device).
  3. Plug the TV in again
  4. Switch on

That’s all. Check out the list of the Best Streaming Devices on Amazon now!

Related Post: 5 Simple Ways To Help You Fix The Black Screen On Your TV


There’re indeed a few cases where you can run the above tests and do everything else we’ve talked about today without fixing your LG TV’s black screen.

If this happens, use the technical knowledge we’ve shared here to choose the right technician.

You already have a rough idea of the nature of repairs you may need.

You also have a rough idea of when is the right time to replace or repair the TV to avoid unnecessary expenditure.

You can use the ideas at such a time to make the right decision.