My Toshiba 50HM66 52 is turns off and on by its self...I will be watching tv for a min are 2 and is on HD...but just replace my lamp...the tv will turn off 3 times and go back on and it dus it a all over if it helps when the the tv turns off on the yellow blinks 5 times and then tries to go back on but it does not go on...but on the 5 time of doing it goes on but then to dues it again