I bought a Sony Mini DV HC15E last few months ago and i used it not more than 3 hours but i found that the same problem occured 3 times. When i'm recording half way, the video turns blue screen and multiple lines occured on the screen. Based on the instruction given by Sony's dealer, the video head needs to be cleaned. I have also purchased a video head cleaner and cleaned the head before the second use. But unfortunately, the same problem happenned again. I lost about 30 mins of the video. Does anyone encounter the same problem like me? is it the tape or camcorder problem? Maybe i should change other brand of MiniDV tape? Please advise.