No Signal
LG Smart TV
Severity: ModerateWhat Does This Error Mean?
No Signal means the TV is not receiving video from the selected HDMI input. The source device may be off, the cable loose, or the wrong input selected. Check the cable, make sure the source is on, and select the correct input.
Affected Models
- LG OLED
- LG QNED
- LG NanoCell
- LG UHD
- All LG Smart TVs
Common Causes
- Wrong input selected on the TV
- HDMI cable loose or disconnected
- Source device (cable box, console, etc.) powered off
- HDMI port on the TV or source device faulty
- HDMI cable not supporting the required resolution
How to Fix It
-
Press Input/Source on the remote and select the correct HDMI port.
Make sure you select the HDMI port that the device is physically plugged into.
-
Check both ends of the HDMI cable.
Unplug and firmly replug the HDMI cable at both the TV and the source device.
-
Make sure the source device is powered on.
A cable box, console, or streaming stick must be on to send a signal.
-
Try a different HDMI port on the TV.
If one port is faulty, another may work. Also try a different HDMI cable.
Frequently Asked Questions
Does HDMI port matter for 4K?
Yes. On some LG TVs, only HDMI 2 or HDMI 3 support 4K@120Hz. Check your TV's manual for which ports support which resolutions.
Can a bad HDMI cable cause No Signal?
Yes. Old or damaged cables may not support HDCP 2.2 or 4K. Use a certified High Speed or Ultra High Speed HDMI cable.