Black Horizontal Lines on Screen

Question

Please, please can someone help me !! I recently purchased the above camcorder (about 5 days ago). I have noticed that when I try and play back the recording and view it on the LCD monitor it has about 5 black lines of equal width and spacing horizontally across the screen. I am using a genuine JVC tape and original battery.How do I get rid of this, or what have I done wrong.I am unsure if it is operator error or there is something wrong with the camcorder.I look forward to a reply.