Replying to HELP black stripes in my cam

I got an almost brand new Panasonic Nvgs320 and today I wanted to put some footage on my pc which usually worked fine, but today it doesnt work as it should. I was looking for the right spot on the tape when suddenly the cam started to show all footage with regular black stripes in it. even that footage I shooted after I detected the problem to look if the tape was damaged. I even tried a new tape, same problem. So, what the hell happened to my cam!?!?
Need desperate help, now!