Hi all. New user here. Just had my TRV355E out on the beach where it got sand inside it. Awefully dissappointed when I played back the filming I did only to find 3 noise bands accrss the screen extending latterally from left to right - corresponding to the lines on the actual head. This leads me to think that the head has been scratched ? Can anyone confirm this for me? or lead me to a self repair or advise anything at all really ! Many thanks in advance for any replies. Regds. ron.