If you can hear audio but the screen is black or shows no video, the issue is often related to the HDMI connection, the selected input, or a temporary error in the connected device (such as a set-top box). Follow the steps below to confirm the TV is responding and to restore the video signal.
This symptom commonly occurs when the HDMI cable or port connection is loose, the TV is on the wrong input, or the connected device (for example, a set-top box) is not outputting video correctly even though it is powered on.
A damaged, non-certified, or loosely connected HDMI cable can allow audio to play while video fails to display.
A set-top box or other external device may freeze or fail to output video even when it appears to be on.
If the TV is not set to the HDMI input where the device is connected, you may hear sound from another source while seeing no picture from the intended device.
Press Volume Up/Down on the LG TV remote.
If the on-screen volume indicator appears normally, the TV is operating and the issue is likely with the external device connection or signal.
If the volume indicator does not appear, try turning the TV off and on, then test again.
Press the Input button on the remote control and select the HDMI port that matches where the external device is connected.
If you are unsure which port is in use, try each HDMI input one at a time while the external device is powered on.
Turn off the TV and the external device.
Disconnect the HDMI cable from the TV, then reconnect it firmly.
Disconnect the HDMI cable from the external device, then reconnect it firmly.
If available, try a different HDMI port on the TV.
If possible, test with another certified High-Speed HDMI cable (HDMI 2.0 recommended).
If you can see the set-top box menu or program information but the broadcast/video screen does not appear, reset the set-top box.
Turn off the power switch on the back of the set-top box (if present), wait at least 5 seconds, then turn it on again.
If there is no rear power switch, unplug the power cord, wait at least 5 seconds, then plug it back in.
After the device restarts, reselect the correct HDMI input on the TV.
If the steps above did not resolve your issue, please visit the LG Electronics Support website. You can chat with our virtual assistant or schedule a service repair for further assistance.
※ Please note that service fees may apply for engineer visits if your product is out of warranty.
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