Logic board or power supply: how do I determine which is bad?Push power button, chime sounds, light comes on and that's it until fan starts about a minute later. Screen stays dark. I...
Replaced headphone jack; now iPhone won't turn on.I went through the ifixit procedure to replace the headphone jack ribbon cable assembly. Installed a new battery while I...
Answer to "Replaced headphone jack; now iPhone won't turn on."You are absolutely correct. I reinstalled the old battery and the iPhone works like a charm. Muchas gracias!