man that happen to me too .... about a week ago i mean if it wont turn on its probably fired. Cause i know mine broke when i turned off my Ps3 after i froze in a game so i flipped the back button and then i tried to turn it back on it was flashing Red and then it would go to green and then when to yellow (which i have never seen in my life lol) and then it would cut off by its self.So i mean if thats whats happening to u then u just need to buy a new ps3 cuz i dont think u can fix it .