i have a mitsubishi ws-65869 that turns off after about an hour, then back on by itself, then repeats this about every 15-20 afterwards. i have a woodstove in the same room and it seems to only happen when the room is warm. last night, i decided to test this theory by watching a movies with no heat in the room (about 63 degrees)-voila! 1 1/2 hours with no shutoff! does anyone have a solution for this problem that doesn't require me to get frostbite every time i want to watch tv?