I recently got a Dvx not too long ago, worked fine and everything and has low hours. But for some reason today when I was filming within 5 to 10 minutes of recording it says "end" on the top left in red letters and it won't let me record. I had 56 minutes or so on the tape but I put a new tape into it and the same thing happened within 5 minutes. Should I try a head cleaner or is it something more serious for that to fix? I'm pretty new to this camera so I'm not sure how big this issue is.