Problem was first: TV would not power up. It would appear to be powering up and connecting to a channel only to go dark and power off. The local "parts re-placer" shop said it was the power supply and replaced that. Then they said it was the main board but it was not available to order. When I opened it up the new (?) power supply was not even connected. When I connected it, something smoked in our near the lower transformer. Is it worth trying to get a main board or is it trash?