I have a Samsung DLP HL-T6156W. I've been experiencing an issue where sometimes after a few minutes or hours the picture will go out, the TV will make a buzzing sound and will turn it self off and back on with no picture and just sound. Other times it will do this when it is first turned on for the day. It make a buzzing sound when turned on and do nothing for a few minutes and then display no picture and only sound. I've replaced the bulb a few weeks ago to try to resolve the issue but it still occurs... any suggestions on what is causing this problem?