Aporte original por: pollytintop ,
try reseating connectors 1,2,3, sometimes they feel like they're in but they're not and iphone won't connect without lcd working properly.. otherwise i'd check out your battery connection. also check dock connector is seated right in the housing. if there's no response in itunes it may well be you damaged the dock connector when you installed it. check out connector 4 (again) and on the motherboard to make sure that theres no fluff etc or bent pins. could try a @^*# good clean with isopropyl alcohol?