I can say with experience that this wouldn't be the first time SCAN have failed to find a fault with a faulty product. Usually helps if you're sure before the first time you send the product as I doubt if they do finally find a fault this time they'll let you have your previous "fine" back. It looks like you're sure this time, but I wonder if it could be sent to manufacturer. I know sending back to retail is easier, but this is SCAN...