You need to check the settings in the TV.
Widescreen movies are designed to be even wider than 16:9. Normally this results in black bars at both top and bottom of the screen. Your description suggests that the TV might be designed to detect those black bars and move the image to the top of the screen.
Widescreen movies are designed to be even wider than 16:9. Normally this results in black bars at both top and bottom of the screen. Your description suggests that the TV might be designed to detect those black bars and move the image to the top of the screen.