Hi, i bought an HDR 2000T about 7 months ago. over the last 2 months the recorings have been scrambled and sometimes not recording at all. sometimes when i press record (or even pause, rewind) i get the blue circle with a line through it appear on screen. the signal strenght is between 60-70% on all chanels. the other thing is some chanels are unwatchable as they are scrambled or very jumpy. i have done the manual tune for the tv mast in my area. the only thing i can think of is the ariel? has anyone else had this issue?