Can anybody help me try to fix my htx evo 4g lte?.. well .. i tried to replace my broken lcd screen. i didnt power off the phone. So in the process , somehow i hit somewhere inside the phone with my little screw and i saw a spark!!.. dont know what happen but didnt pay no attention to that spark.. i managed to replace the screen and pit a new one in.. but when i powered on the phone, my screen is all black!! Cant see anything!!.. any body help mw fix or solve my problem??.. thanks