Reasons your LG TV says there is no signal (and how to fix them)

If your LG TV says there’s no signal, your first step should be to check all the connections between the TV and the source you’re trying to watch.

If that doesn’t solve the issue, you’ll need to troubleshoot to find out what exactly is causing the problem. I’ll take you through some common reasons why an LG TV might say no signal, and how you can fix it.

Reasons your LG TV saying ‘No signal’

why does my LG TV says no signal

Generally, a “no signal” message on a Sony TV can appear for various reasons. One of them is a loose antenna connection. On the other hand, faulty source devices, loose cable connections, service providers, or outdated firmware can also lead to this problem.

However, these are the primary reasons that could trigger no signal issues on your LG Smart TV.

  • The TV is not set to the correct input.
  • The TV is not properly connected to the input device.
  • The cable box or satellite box is not turned on.
  • There is a problem with the cable box or satellite box.
  • There is a problem with the signal cable.
  • There is a problem with the TV.

Fixing the Sony TV No Signal issue

As mentioned, “No Signal” means your TV is not receiving input from the source. Several things could cause this, so it’s important to troubleshoot the issue to determine the root cause.

In short: To troubleshoot the signal issue on your LG Smart TV, first ensure that all of your connections are secure and tight. If you’re using an HDMI cable, try unplugging it and plugging it back in. But if you’re using an antenna, check to ensure it’s properly connected to your TV.

Before moving into a detailed solution, please look at the bellow table for a better understanding of this problem and its solution.

Reasons Solutions
Loose Antenna/HDMI cable Tighten the Cable
Software Glitch Reboot/Reset
Outdated TV Firmware Update the Firmware

1. Secure the Antenna cable connection.

lg tv showing no signal message

In most cases, a loose antenna cable connection is the primary reason for this issue. Sometimes your antenna or cable is just not connected properly. So, before you do anything else:

  • Make sure your antenna is securely connected. (The antenna jack may be on your television’s side or back panel.)
  • If there’s no visible port labeled antenna, check your owner’s manual or look around your television for a cable or cord that leads out of it.
  • Remove and replace any cables that have been dislodged during recent use or storms.

Moreover, ensure that your antenna cable is plugged in firmly and at both ends of the connection.

Related: Quick and Easy tips to get better picture quality on your TV

2. Disconnect all the cables.

disconnect all cable from lg tv

Sometimes, simply disconnecting all your cables will fix whatever issue you have. It may seem sound silly, but it works most of the time.

Try unplugging every TV cable (inputs and outputs), wait at least a few seconds, then plug them back in. If your problem persists or you can’t find your solution, move on to the next step.

3. Try a different source

checking source device

These seem obvious solutions, but you’d be surprised how often people skip right over them. Sometimes your issue is not a problem with your receiver or cable box; it could just be a problem with your television’s channel selection.

However, if your source is set to cable or satellite, switch it and see if that changes anything. Or, try a different input device, like a Blu-ray player or game console. In some cases, you may need to restart your TV to recognize these devices after making these switches.

Ensure that your devices are powered on and working correctly before testing them with your TV.

Related: LG TV Remote control not working (Easy ways to fix)

4. Check the source device if it’s faulty.

ensuring that source device is working correctly

There is also a possible problem with your source device, not your television. So, check that your source device is working correctly by connecting it to another television or different input on your current set.

If you can usually play content, you know it’s not an issue with your TV, and you need to troubleshoot your source device.

5. Run the Auto program feature

run auto programme mode

Sometimes your television needs to be re-programmed. Adjusting a few settings can fix your problem. The Auto Program feature on LG TV is designed to automatically change specific settings and typically fixes the signal issue within one or two attempts. To do that,

  • Press the Home or Menu button on the remote.
  • Select Setup or Settings.
  • Select Channel.
  • Select Auto Tuning or Auto Program.
  • Select Start.

It is important to allow the device to completely scan to 100%. If the device is not allowed to
search for all available stations, some could be missing from the channel list. Plus, if your TV showing not programmed message after this process, read this article.

In terms of auto-programming methods, each model is unique. The processes and terminology for your model may differ from those in the above guide. You will find everything about the auto-program feature in the manuals.

6. Factory reset your TV

resetting lg tv to factory settings

Another effective way to fix the signal issue is to reset your TV to its factory setting. Resetting will also remove any software-related bugs from your TV and help it run smoothly.

To reset your LG TV to its factory settings, Press the Gear icon on your remote. Then go down to All Settings (Advanced Settings) > General > Reset to Initial Settings. Your TV will turn off and on again and then display the initial setup screen.

But remember that resetting the TV to its factory setting will delete all downloaded apps, content, saved info, and settings.

7. Update the TV’s Firmware

updating lg tvs firmware

If none of the above methods work, check if the TV has installed the latest firmware. If not, update your Sony Smart TV. To check and update your TV:

  • Go to Settings > All Settings > Support.
  • Select Software Update.
  • Select Check for Updates and if an update is available Download and Install it.

After downloading, power OFF the TV for 10 seconds then power ON to install the update. Once installed, turn on your TV and check for signals again.

Don’t power off your TV or unplug it from the power outlet during the update process. Interrupting the update process may cause your TV to become unresponsive or require repair.


1. My LG TV still says no signal, but everything is fine!

In this case, there might be an issue with your TV, or the input jack may be malfunctioning. It’s better to call an experienced repairer to look at your TV. You should contact LG customer care if your TV has a valid warranty.

2. My LG TV says “no input detected”

If your LG TV is displaying the “No input detected” message and advises you to check the external input, it means that it’s not receiving input from your HDMI source. There are a few things you can do to fix this issue:

  • Check that all of your HDMI cables are properly plugged in.
  • If you’re using an HDMI splitter, make sure that it’s properly connected.
  • Check your HDMI source (e.g. Blu-ray player, cable box, etc.) to see if it’s turned on and set to the correct input.
  • Try a different HDMI cable.

If you’re still experiencing the issue, you may need to factory reset your Sony TV.

5 Best Shows on Netflix You’ll be Addicted to Right Now! 2022’s Best Speaker Brands: Find Out Which Ones Are Worth Your Money 2022’s Best Home Security Systems: Protect Your Home Like a Pro 10 Energy-Saving Smart Home Gadgets You Didn’t Know You Needed These Smart Devices Will Simplify Your Baby’s Bedtime Routine