Chosen Solution
Hi iFixit, I’m a fan of you on youtube, I will thank you for teach me more about iphone on youtube. I have a problem, I replace my 3Gs battery everything goes perfect. I put my phone in charge and fall in sleep, when I wake up, my phone won’t turn on. can you help me ?? I changed the cable and also try to put it on my PC but nothing happend, I also hold the home and power button but nothing at all, can you help me ??.
you need to check the dock connector for dirt and debris/bent pins. you also need to check that the connector no4 is on properly. It may have been loose/not connected so when your new battery drained you are unable to recharge..hence won’t turn on. No idea what zaabar is on about.. you should be able to fix this yourself, try small changes first before declaring logic board fault.
You need to do the major servicing. If still unchanged, the logic board (DC-DC converter) is faulty. Like maintain a car, there are 2 type of services. Minor & Major services. Minor service just check or replace like battery and outer dust. In major service, must dismantled and check all part of a system, remove all internal dust, replace all half-faulty components and so on.
