Blurry vertical lines with no focus on screen

I put a new tape in my sony dcr-hc18e the other day, but when I went to record, all i could see was blurry vertical lines on the screen. You can move the camera around and they do change colour etc and they do change when you zoom in.If I record all I get is the same blurry images.If I put another tape with images already on it, it plays back fine.I have been storing the camcorder on top of a recording dvr(cctv) when it's charging-is it possible that the heads have been magnetized or something? While taping I believe it said something on the screen about cleaning.And horizontal grey lines are across the camera. I changed the tape and the same lines are there.