I have an iphone 3gs The antenne was not working anymore so i opened the phone. Put it together again and after an reset he started again. Because the antenne didn't work i opened it again. Now i have a real problem. The phone is not resseteble anymore. If i make connection with Itunes i get the quistion to type the 4 numbers code. But the display of the phone doesn't work. No apple logo. He only shines as an lamp. Battery already put out and in again. Anyone an brilliant idea????