Chosen Solution
Hi, My iPhone6 don’t load energy so i replaced the battery, charge jack and finaly Tristar IC (two times). I pluged the charge cable and with the multimeter measured the voltage which was between 0 and 1.5 Volts. Someone can tell my what i did wrong or what could i do to get an higher voltage between 4.8 and 5 Volts?
Is the phone recognized by iTunes? Where you measuring the voltage of 1.5V at the battery terminals? Normally this kind of problem is Tristar related but it could also be Tigris, which is responsible for delivering the current to the battery. I would check that circuit in detail. I would also consider Tristar again. You may have a bad batch of chips or perhaps something has gone wrong with your rework (especially if you are just starting out).
Before replace TRISTAR you need to confirm that Q1701 feeds TRISTAR with 5v. How to confirm? Check C1704 for 5v. If 5v not present remove Q1701 and jumper pins 2-3.
did you check pmic if its faulty you will have no power either
