I have had my 61" DLP for about three years now, and lately, it has been randomly turning off by itself. I can just turn the TV back on and it seems to work fine, but why would it be turning itself off? It should be any type of overheating problem. It happened first thing this morning after being off all night, and withing five minutes it turned itself off. I turned it back on, and it has been on for the last hour without turning off again. Thanks in advance.