HAVE A 7INCH DVD PLAYER BY YOUR COMPHANY BUT I HAVE SOUND BUT NO PITURE . I HAVE A WHITE SCREEN ON IT WHEN I FIRST TURNED ON THE PLAYER IT WAS WORKING FINE BUT VERY SOON IT STARTED TO SHOW A WHITE SCREEN . ALSO IN ORDER FOR MY SCREEN TO WORK TO SHOW DVD MOVIES MUST THE BATTERY BE FULLY CHARGED IN ORDER FOR THE WHITE SCREEN TO GO AWAY AND MUST I PUT A CODE BACK INTO THIS PLAYER AND IF SO WHAT IS IT AND HOW DO I DO THIS. MY DVD NUMBER ON MY DVD PLAYER IS LMD-6708Y