How to Fix Picture Problems on an LG Smart TV

Introduction

Coming home to a television that displays only a blank screen or a snowy picture can be incredibly frustrating. This guide will walk you through the steps to find exactly where the problem is, and do what you can to correct it with your LG Smart TV.
LG Logo.

1 Check Remote Batteries

  1. Lift the back cover up and away from the remote.
  2. Remove and re-insert the 2 batteries.
  3. Reposition the back cover onto the remote, and slide down to click it into place.
    Inserting batteries into a remote control. Illustration.
  4. If the remote fails to respond properly after this, replace the existing set of batteries with new ones.

? Did this resolve the problem?

  1. Yes
  2. No

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Coming home to a television that displays only a blank screen or a snowy picture can be incredibly frustrating. This guide will walk you through the steps to find exactly where the problem is, and do what you can to correct it with your LG Smart TV.
LG Logo.

  1. Lift the back cover up and away from the remote.
  2. Remove and re-insert the 2 batteries.
  3. Reposition the back cover onto the remote, and slide down to click it into place.
    Inserting batteries into a remote control. Illustration.
  4. If the remote fails to respond properly after this, replace the existing set of batteries with new ones.
  1. Turn it off by pressing the Power button on the unit itself or on the remote.
    Power Symbol.
  2. Then unplug it from the power outlet.
    Power cable being unplugged from power outlet.
  3. Wait for 10 seconds.
  4. Plug it back in then turn the TV back on from the Power button.
    Power Symbol.
  1. Push the Home button on your remote.
    Newer LG Remote with Home button highlighted. Older LG Remote with Home button highlighted.

Sometimes, it's not a problem with your TV, but rather with the device sending pictures and sounds to your TV.

  • Try testing another device, first. For example, if you're watching cable, try switching to DVD or Blu-Ray, and play something there. If that works, it's most likely not a problem with your TV, but rather the device that's sending the programming your TV is showing.
  • Try turning your cable, DVD, or Blu-Ray player off, waiting a few moments, then turning it back on, and try again.
  • If one device works fine (say, your DVD or Blu-Ray player), but another does not (say, your cable box), it would be best to contact the provider of the device that isn't working.

Our next steps depend on if you're receiving anything at all from any source you select, and if we're getting a snowy picture.

Try checking your broadcast television, cable or satellite television, Blu-Ray player, etc. Make sure you're getting anything at all from any of your devices.

We must determine which platform is loaded on your LG Smart TV before beginning. Newer TVs released after 2014 will have webOS. Older models released between 2011 and 2015 will have NetCast. See the images below to help tell the difference.

  • Using webOS
    LG Smart TV using webOS.

  • Using Netcast
    LG Smart TV using Netcast.
  1. Push the Home button on your remote.
    Remote with Home button highlighted.
  2. Select the Settings gear icon in the top-right corner.
    Home menu overlay inset with settings highlighted.
  3. Select All Settings at the bottom right.
    Settings overlay inset with All Settings highlighted.
  4. Select Channels, then Channel Tuning.
    Channels menu with Channel Tuning highlighted.
  5. Follow the prompts to allow your television to re-scan the channels and tune them back in properly.

This process can take a long time to complete, as there are hundreds of possible frequencies to check. The process is fully automated, and you do not need to watch it; you are free to leave and return later.

  1. Push Settings on your remote.
    Remote inset with Settings highlighted
  2. Select Channel.
    Settings menu with Channel highlighted.
  3. Select Auto Tuning.
    Channel settings with Auto Tuning highlighted.
  4. You will be asked to verify the connection to your antenna is proper. After you are sure, select Yes.
    Auto tuning dialog with Yes highlighted.
  5. The scan process will start, and a dialog will show the progress.
    Auto tuning progress dialog.

This process can take a long time to complete, as there are hundreds of possible frequencies to check. The process is fully automated, and you do not need to watch it; you are free to leave and return later.

HDMI Cable HDMI Cables.
HDMI Port HDMI Port.

Checking the TV inputs may also help to fix the issue.

  1. Confirm that both your TV and the device are turned on.
  2. Check that your TV is set to the correct input signal (HDMI).
  3. Check that the HDMI cable connection to your device is secure.
  4. Check that the HDMI cable connection to your TV is secure.
  5. Check that the HDMI cable is connected to the "out to TV" port on the device.
  6. Try plugging the HDMI cable into a different HDMI port on your TV.
  7. Try using a different HDMI cable to connect your device to your TV.
  8. If possible:
    • Check if TV is working properly with a different input device.
    • Check if the device is working properly with a different TV.
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