I have a Samsung HLP5067WX DLP 50 Inch TV. A couple of days ago I turned the set on and it came on for a couple of seconds then powered off. During the past few weeks there has been a lound noise coming from the rear of set when I would shut the set down. One the front of the set there are three lights flashing, Timer, Lamp and Stand by/temp which usually indicates a bad Lamp. I replaced the lamp and it did not fix the problem. Any help would be appericated.