I have had my HD45 since September 1'st now. I was very happy at first. For the past few days I have noticed on terrestrial channels an annoying sudden darkening then returning to normal of the picture. It's as if someone was turning then down the contrast them almost immediately turning it back up. At the moment, I don't believe that it happens on anything via scart. At first it was only me that was noticing it, but now all my family are complaining. Have any other HD45 owners come across this? I am assuming the set is faulty? I purchased it from Avwow. what's their customer service like? Steve..