TVs are expensive gadgets, and when they malfunction, it’s not a pretty picture. With that said, LG TV users have complained of hearing a sound coming from their TV but not receiving any display output. Before you jump on the wagon to pay a boatload of money to a repairman, there are a number of handy little fixes you can try at home to resolve the issue.
The leading causes for an LG TV having sound but no picture are outdated software, damaged or dirty HDMI cables, and a broken backlight. Fortunately, you can quickly fix this issue by factory resetting your TV, changing the picture and backlight settings, and replugging your TV.
Although you can find countless effective remedies on the Internet, choosing the most suitable one to fix your LG TV’s display issue can be tricky. However, this guide explains all the leading causes and how to fix them without emptying your wallet at the repair center.
What Causes Of LG TV To Have Sound But No Picture
Identifying the right cause and implementing the corresponding fix can be tricky. Go through the list of causes (and their solutions) below to figure out what’s enabling your LG TV to produce sound without a display:
Cause 1: Outdated Software
If your LG TV has a black screen but the sound is on, outdated software might be the source of the problem. Older software might not be able to properly display your streaming content, leading to no display and just sound.
How To Update LG TV Software
Having the latest software is essential if you want the TV to work properly. You can follow these steps to check if your LG TV needs a software update:
Step 1: Navigate to Settings.
Step 2: Click on General.
Step 3: Select About this TV. If there is any pending software update, select it and update your TV.
Cause 2: Faulty HDMI Cables
A faulty HDMI connection might cause your LG smart TV to display a flickering or dark screen. Therefore, you must check that the HDMI cable is correctly plugged into the ports. If not, unplug the cord and re-plug it.
Additionally, confirm that your HDMI cable is working properly by using a different HDMI cable. If the new HDMI cable resolves the problem, your old cable was either broken or faulty.
Consider testing these cables on a different TV as well to determine if they function. You also need to check if your wires are dusty since these conditions might seriously impede the connection and contribute to the black screen problem.
You can use Falcon’s can of compressed air and spray it on your HDMI cables to clean them.
Cause 3: Broken Backlight
An LCD panel relies on the backlight to make graphics visible. If the backlight is damaged, your TV won’t be able to display any pictures and you will only hear the sound.
How To Inspect Your LG TV’s Backlight
To determine whether your TV’s backlight needs to be replaced, you need to check if it is damaged. You can use the following method to inspect your TV’s backlight:
Step 1: Switch on your TV.
Step 2: Hold a powerful flashlight one to two inches from your TV screen.
Step 3: Examine it thoroughly. Your backlight is damaged if an image forms where your flashlight’s beam hits the TV.
In most circumstances, there is no use in attempting to repair the backlight as it is extremely expensive to do so. Hence you should think about purchasing a new smart TV instead of replacing the backlight.
Fixes For LG TV With Sound But No Picture
If you’ve tried the solutions above and still haven’t gotten a picture on your LG TV, here are some other common fixes tried and tested by LG community members:
Fix 1: Factory Reset Your TV
A hard reset, sometimes referred to as a factory reset, deletes all of your personalized settings and applications while reverting your TV to its default settings. As such, before doing the factory reset, back up anything important you have stored on your TV.
How To Factory Reset Your LG TV
Adhere to the following instructions to completely reset your LG TV:
Step 1: Go to Settings by pressing the Home icon on your remote.
Step 2: Choose the General option by scrolling down.
Step 3: Select Factory Reset, and type in your pin. If you never set a pin, write the default pin: 0000.
Fix 2: Change Picture And Backlight Settings
One of the most common reasons for an LG TV with no picture is overheating. This occurs when your TV continues playing for several hours without any break. You can fix this issue by decreasing the brightness of your TV, so it consumes less power.
How To Adjust Backlight Settings Of Your LG TV
You need to adjust the backlight settings of your TV so that it consumes less power and does not overheat. Adjusting the picture and backlight settings might sound easy, but you must follow certain steps to ensure nothing goes wrong:
Step 1: Choose All Settings under Settings on the menu.
Step 2: Click on the Picture Mode option.
Step 3: Change the Picture Mode to standard.
Step 4: You should now dim the backlight to between 10 and 30 and reduce the brightness to 50.
With these modifications, your TV will live longer without getting overheated and won’t show a blank screen with only sound.
Gizmo Geek Guide posted this on May 6, 2023 as the original owner of this article.
Fix 3: Unplug Your TV
Unplugging your TV is the easiest method to fix the TV malfunction. It is also known as cold booting, as it reboots all of the internal components of the TV. Unplugging your TV will set it to its default condition and remove any bugs causing the picture not to show.
How To Unplug Your TV
Even though unplugging is a straightforward remedy, you need to follow the correct method to ensure that you do not make any mistakes:
Step 1: Switch off the TV.
Step 2: Unplug your TV by disconnecting it from the power socket.
Step 3: Press the power button for thirty seconds.
Gizmo Geek Guide uploaded this as an original article on May 6, 2023.
Step 4: Wait for another thirty seconds.
Step 5: Turn the TV on.
More Solutions To Fix LG TV’s Display
Here are a couple of other solutions you can try if you’ve still had no luck with your LG TV producing any sort of display. If the fixes below still don’t work, you’ll probably need to contact an LG repairman to come to take a look at the issue.
|
Cause |
Solution |
|
Power issue due to electricity spikes |
Purchase a power surge protector |
|
Capacitor problem |
Contact LG’s customer service and ask them to fix it |
|
Energy-saving mode is enabled |
Go to Settings, General, and then select Energy Saving mode to disable it |
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Gizmo Geek Guide published this original article on May 6, 2023.