If your TV shows a no signal message, make sure both your TV and set-top box are turned on.
Reconnect the HDMI cable, and then select the TV input that matches the port connected to your set-top box.
If an antenna or coaxial cable is connected directly to your TV, run Auto Tuning to search for available channels.
Why Does No Signal Appear on Your TV?
- Your TV is on, but your set-top box or external device is turned off.
- A loose cable or damaged port prevents the video signal from reaching your TV.
- The selected TV input does not match the connected HDMI port (for example, your cable is plugged into HDMI 1, but your TV is set to HDMI 2).
- Auto Tuning has not been completed for the antenna or coaxial cable connection, or the broadcast signal is weak.
How to Restore Your TV Signal
Step 1. Check Your Set-Top Box Power and Status
Make sure the LED indicator on the front of your set-top box is on.
Press the Power button on your set-top box remote. If the remote does not respond, press the Power button directly on the set-top box.
If the LED indicator remains off or the set-top box does not respond, unplug the power adapter from the wall outlet.
Wait about five seconds, and then plug it back in to restart the set-top box.
Step 2. Select the Correct TV Input
Press the Input button on your LG TV remote. If your remote does not have an Input button, press and hold the Home Hub button.
From the on-screen input list, select the HDMI port connected to your set-top box.
Check if you can see live TV and the correct channel number.
Step 3. Reconnect the HDMI Cable or Try Another Port
Disconnect the HDMI cable from your TV and set-top box.
Remove any debris around the TV’s HDMI port, and then reconnect the cable securely.
If another HDMI port is available, connect the cable to that port to see if that fixes the issue.
Step 4. Run Auto Tuning for an Antenna or Coaxial Cable Connection
On your TV remote, press the Settings button (gear icon) or the Mute button three times in a row.
- If an antenna or coaxial cable is connected directly to your TV without a set-top box, run Auto Tuning to search for available channels.
- For TVs released in 2021 or later (webOS 6.0 or later): Press the Settings button on your remote. Select All Settings, then General, Channels, Channel Tuning, and Auto Tuning.
- For TVs released in 2020 or earlier (webOS 5.0 or earlier): Press the Settings button on your remote. Select All Settings, then Channels, Channel Tuning, and Auto Tuning.
Step 5. Still need help?
If the issue persists after following the steps above, you can get further support through LG Chatbot on our website or by requesting a technician visit.
Frequently Asked Questions
- Q. Why is there no picture when the set-top box is on?
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A. Unplug the power cord from the back of your set-top box, wait five seconds, and plug it back in.
If the issue persists, it might be a signal problem, so please contact your service provider for a line check.
- Q. Why am I getting a "No Signal" or "Weak Signal" message on just one channel?
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A. If the issue affects only one channel, your device connection is likely fine.
The broadcaster’s signal might be weak, or you may need to contact your service provider for a line check.
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This guide is based on standard models. The settings menu may vary by model.
