We had a customer in this week with an iphone 6s that had gotten very hot and stopped working.
We connected to our ammeter and found that it was not charging at all. After this we opened it up and connected to our dc power supply, there was no amp draw even when we pressed the power button which is very unusual.
We then checked the power button which was working fine. There was also no short on the main power rail which can be a common cause for no power on the 6s. Next we removed the logic board and inspected the bottom of the back where we see most power issues on the 6s and we found that Q2300 had blown and C2330 next to it was burnt out.
We removed these components and replaced with a new power IC and a capacitor from a donor board which resolved the problem. We connected it back up to our power supply and the phone booted like normal, we then reassembled the device and checked that it would charge and work without getting hot and dying again. After testing we were happy with the outcome of the repair, The phone now charges and powers up and works perfectly.
The customer was delighted to get their phone back in working order.
If you have a phone that won’t turn on or charge please feel free to get in touch, we can repair 90% of power issues and are always happy to help.