On my Viera 42", which I have had only for 10 days, the picture from all sources including all AV inputs has shifted about 6 inches to the left losing those 6 inches off to the left of the screen with a corresponding black bar on the right hand side. It had worked fine up to saturday night, but on turning on the TV sunday morning the shift has occurred. No setting changes have been made overnight and I have unplugged the mains, unplugged all connections several times. Anyone have any ideas? Obviously I will contact the retailer (H. Preston) today, but I was wondering if there was something obvious I might be missing. Many thanks.