Dvd no picture just sound

When you say No picture?? s the Picture all black Like theres no video? Try checking the video input on the tv or the cables from the player. If the inputs and cables are bad then theres a poroblem in the video processor in the dvd player and the only way to vix that would be to get a schematic diagram and a scope and trace out the video and see where it disapears. Good Luck