Contacted an authorized service center. They and I have been calling Daewoo technical support for the last two months trying to get some kind of information to fix the TV. Daewoo does not seem to support its product or to return calls to its service centers or its customers. If you believe that customer support as a part of what you pay for (especially for something that costs $$$) then you want to buy Sony, Toshiba, anything but Daewoo.