If the screen shows duplicate pictures/colors when connected to a set-top box, it may be due to a poor HDMI cable connection.
If colors duplicate in only certain channels, it is likely an issue with the broadcast signal rather than the TV itself.
Causes and Symptoms
- The connection to your set-top box is bad.
Try this
Do colors overlap on your screen?
➔ Go to [Settings] and start [Picture Test] to check if the picture works normally.
webOS 5.0
Select [All Settings] in the [Settings] menu.
[Prior to 2019] WebOS
Select [All Settings] in the [Settings] menu.
If the image on the test screen appears okay, it indicates that the issue lies with the broadcast signal and not the TV itself.
If the problem does not occur in the picture test, please contact the set-top service provider. (e.g., cable TV, Skylife, IPTV)
If the problem persists in the picture test, please contact LG Electronics Service Center.
This guide was created for all models, so the images or content may be different from your product.
