Origineel bericht door: Matt Gordon ,
Did you drop it? This happened to me after physical damage. I changed the battery and the screen but the iphone would still not work. It got extremely hot when i turned it on (most of the heat from that black chip thing you described). I could plug it into iTunes and get the "stuck in recovery mode" error message, but was unable to bring it back to life. It is possible that you shorted a fuse or something. In that case, it may be time for a new phone as there is not much you can do to fix it :( Or you could try to take it to a local repair shop and they can do some board-level inspection and repair.