Tv or dvd player

this isnt solution sorry but i have question i can see the picture but cant hear anything i have headphones wireless for the car they arnt dead the batteries work i replaced them with new and still nothing :( am i supposed to turn on the radion to hear it i dont care if its on the headphones or for everybody to hear i just nead the sound to work

Make sure that your dvd is electrically connected to your car. All you got to do is put it on by pressing the power button of the DVD. Then, press the dvd loading button open. Place the dvd on the loading tray, and push the button to close to load the dvd. Then press the triangle sign on the DVD to let it play. Then, you can press the volume to your preffered sound level.