Purchased a new lamp although not sure if it was the problem. While waiting for the lamp to arrive I called a local TV repair guy. He said he would charge $30. to diagnose the problem , so I said what the heck. He pulled out and tested my power supply and determined it is working fine. Says my lamp was the problem although he never touched anything other than the power supply board. He quoted me a price of $250. to replace the lamp, of course I declined what with the new lamp on its way. Now here is whats strange, ever since he pulled the board out, the TV has been working and turning on just fine. A bit dusty back there wondering if that could be the problem or perhaps cutting all power to the TV had something to do with it. Perhaps just a coincidence.