If you do not see lines on other screens, it could be due to incorrect settings for the input signal or screen size on your TV.
Try this
Things to check in advance
Check the antenna signal and cable connection status.
Setting the screen size
Original Screen Mode is an option that enables you to view high-definition videos at the highest quality without any loss.
This option can be selected when there is a high-definition video signal coming from a digital TV or HDMI port.
The modes available are [4:3] and [16:9], which are automatically selected according to the input signal.
※ Please note that the adjustment menu may not be available in some TV models.
This guide was created for all models, so the images or content may be different from your product.