[LG TV] Black and White Screen (How to Turn Grayscale Off)

If your TV screen appears black and white, first check whether Grayscale mode is enabled, and turn it off.
To determine if there is an issue with the TV itself, run a Picture Test (Screen Self-diagnosis).
Note that if Grayscale mode is on, the Picture Test image will also appear black and white.
If the issue continues, please contact LG Support for a detailed consultation and inspection.

Possible Causes of Black & White Screen

• [Grayscale] mode is enabled on your TV.
• The signal from the set-top box or other external device is unstable.
• The HDMI cable connected to the TV is damaged or not properly connected.
• Antenna broadcasting signal sent to the TV is unstable.
• The TV itself is malfunctioning.

Troubleshooting Black & White Screen

Make sure [Grayscale] mode is turned off.

Grayscale mode displays the screen in black and white.
※ This feature is supported on TVs released from 2020 onward [webOS 5.0~].

Steps for Turning Grayscale Off on TVs released in 2024 [webOS24~]

1. 1. Press the Settings [] button on the remote control. Select the All Settings [] icon on the top left of screen.
2. 2. Select [General], then [Accessibility].
   
3. 3. Turn [Grayscale] off.
   

Perform [Screen Self-Diagnosis] to check for any TV issues.

Use the Screen Self-Diagnosis (Picture Test) function to check for TV issues

Steps for Picture Test on TVs released from 2024 onward [webOS24~]

1. 1. Press the remote control Settings [] button. Select the All Settings [] icon on the top left of the screen.
2. 2. Select [Support], then [Screen Self-Diagnosis].
   
3. 3. Review the test image shown on screen.
   If the image displayed is abnormal, please note down your TV model and contact LG Support for assistance.
   

※ To check your TV model name, select [No] when prompted during Screen Self-Diagnosis.

If the Picture Test shows no issues, it is likely that the issue does not lie with the TV itself.
Inspect the HDMI cable that connects the set-top box or another external device to the TV.

Reconnect the set-top box HDMI cable

Turn off both the TV and set-top box. Disconnect the HDMI cable (or component) from the back of the TV and reconnect it.
It is recommended to use a genuine HDMI cable.

Perform an AV Reset

• TVs released after 2025 [webOS 25~]: Press the remote control Settings [] button three times in succession to reset the audio and video.
• TVs released before 2024 [~webOS 24]: Press the remote control Mute [] button three times in succession to reset the audio and video.

This guide was created for all models, so the images or content may be different from your product.