HELLO, I HAVE A TSX 4740 THAT IS LOOSING ITS V MEMORY. I CAN'T FIND WHERE THE BATTERY IS LOCATED, AND I CAN'T FIND A MANUAL FOR IT. DOES ANYONE KNOW WHERE I CAN GET A FREE MANUAL, OR CAN ANYONE TELL ME HOW TO CHANGE THE BATTERY. I WILL APPREACIATE ANY HELP, THANKS