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Hello, recently I bought two iPhone 6s Plus from someone privatly. He told me that the phone on question recently had a battery replacement done by a repair shop. A couple of days later it died and smelt “weird”. Problem is: I thought it was a problem with the charging port/ battery. I replaced both with working parts but it won´t turn on, isn´t being recognized by the Computer (not even in DFU-Mode or by any other software. I contacted the costumer service because the battery was still under warranty by the manufacturer (Hagnaven a company that at least to my knowledge seems to be very good). Only thing that I wonder about is: Why does a repairshop use an almost TWO year battery to replace a battery of costumer? I don´t know if I can hope for help from the manufacturer of the battery. Right now what I am wondering: What are the possible defects? (I already replaced every part EXCEPT for the Mainboards of course. :D) How much will I have to pay in parts/ repair-service? Is it a problem where I need a SMD-Station for? If so: do you have recommendations for a cheap but OK station? If you have any questions about something ask. Thanks in advance.
It sounds like the motherboard has a short. It has nothing to do with the battery. You will need to have someone who does micrsoldering repair. I would recommend jessa from ipad rehab ipadrehab.com or Jason from sts telecom ststelecom.com they are a couple of the best at this. If you check their websites they will give you prices. Update (05/10/2020) If you want to repair it yourself you will need to buy a microscope, a soldering machine, and micropencil and a hot tweezers adapters, a hot air machine, I would also recommend a a dc power source and silicone mat to solder on. You will need to purchase a subscription to zxy which is a schematics service for cellphones and tablets etc.you can purchase it from jessa at ipad rehab ipadrehab.com for 69 dollars for a 1 year subscription. I am just teaching myself how to do this and so far I have spent about 4,000 dollars on equipment but I bought the best because why buy junk. I would also look at taking a class from jessa at ipad rehab. Also watch all of the videos from jessa at ipad rehab , Jason from sts telecom, Louis from louis rossmann on YouTube. And I would practice on iCloud locked phones before working on customers phones. I hope the information helps
try reset the iphone you need to hold down the Home button and the Power key until the Apple logo appears. or enter DFU mode How to enter DFU mode on Apple iPhone 6s Plus
