If your LG TV plays audio but the screen stays black, the TV may be receiving sound while the video signal is not reaching the panel. This is commonly caused by an external device, an HDMI cable connection issue, or a broadcast signal problem.
This symptom usually occurs when the TV can output sound but is not receiving a valid video signal, or when the broadcast signal path is interrupted.
A loose, damaged, or incompatible HDMI cable can allow audio to play while video does not display. This can also occur if the external device is not outputting video correctly.
If you can see a set-top box menu or information banner but not the broadcast picture, the set-top box may be temporarily malfunctioning.
When an antenna or cable TV line is connected directly to the TV’s antenna port, a building distribution issue or provider line issue can prevent video from displaying.
Press the Volume Up/Down button on the LG TV remote.
- If the volume indicator appears on the screen, the TV panel is displaying menus and the issue is more likely related to an external device, input signal, or cable.
- If the volume indicator does not appear, the TV may require inspection. Please contact LG Electronics service for diagnosis.
1) Turn off the TV and the connected external device.
2) Disconnect the HDMI cable from the TV, then reconnect it firmly.
3) If possible, disconnect the HDMI cable from the external device and reconnect it.
4) Turn the external device back on, then turn on the TV.
If available, try a different HDMI port on the TV.
LG recommends using an authentic High-Speed HDMI cable (HDMI 2.0 or higher) for stable video output.
If you can see the set-top box menu or broadcast information but the broadcast picture does not appear:
1) Turn off the set-top box using the power switch on the back (if available).
2) Wait 5 seconds.
3) Turn the set-top box back on.
If the issue continues after resetting, contact LG Electronics service for diagnosis.
If a public broadcast antenna or cable TV antenna line is connected directly to the TV’s antenna port, request an inspection from your property management office or your cable TV service provider to confirm the line and signal status.
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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