Why is my Smart TV displaying a green or purple screen?

1. Check if the HDMI or AVI cable is correctly connected to the TV.
2. Check that the device connected to the TV has a supported resolution.
3. Check if there is an issue with the streaming app.
4. Check the settings of the TV.
5. Unplug and re-plug the device to the TV.
6. If problem persists, contact your local service center.