Are you talking about a bricked psp? Is your psp's green light turns on but no video and no sound? Then after a few seconds later the green light turns off? If yes to all this questions, then sadly to announce that you have a very serious problem in your hands. There is really nothing wrong with your psp's daughterboard. You see, a psp thats bricked due to a firmware problem will most likely come to life by using a magic memory stick and a pandora battery. After using this tools, if the psp still not functional, then what you have is a hardware problem. Almost impossible to fix unless the motherboard gets replace by another one. I have personally experience this problem numerous times with different psp's and the pandora tools were useless. I hope this help. Good Luck!!