Hi, I dropped my iPhone 3GS and my lcd screen was broken. I ordered a LCD screen + digitizer + home button + earpiece and flexcable assembly (with frame) from ebay and installed it. I have done this a couple of times, so I know how to do this. But I have a problem: when i press the home button/power button, only the backlight of the screen turns on, but I does not see anything. I also tried to restore my firmware (iTunes recognizes the iPhone perfectly), but that didn't work. I also searched google, but I could not found anything like my problem. My question offcourse: how to fix this? Is this a problem of the logicboard, or is the lcd screen not good? Thanks for your help.