Share How to Fix iPhone 6S Not Charging Issue

1. How to Fix iPhone 6S Not Charging Issue
The customer sent us an iPhone 6S motherboard to repair, the
faulty described is that this iPhone 6S is not charging.
This iPhone 6S motherboard has a slight water phenomenon,
and causes iPhone 6S not to boot, after the repair, iPhone 6S can
be turned on normally. However, after testing, the iPhone 6S
won't charge, there is no response when insert the charger, no
sign of charging，the iPhone can be connected to computer.
Use Stereo Zoom Microscope to observe the iPhone charge
circuit, there are no visible signs of water damage on iPhone tail
plugs. Picture 1
Considering that the upper part of the iPhone motherboard has
water damage ， and the iPhone can be connected to the
computer, according to the previously repair experience, we

2. should focus on the water damage circuit of the iPhone
motherboard. Check it carefully, we find the resistor R4510 is
corroded by water.
After check iPhone 6S schematic diagram on WUXINJI Dongle,
we know that this circuit for iPhone main power that output to
the USB control signal TRistat_USB. Picture 2
Now, we found the faulty part, so, clean the corroded area and
replace the resistor by using QUICK 861DW hot air rework
station and Titanium Alloy Tweezers. Picture 3

3. Install the iPhone and test it, all functions works normally.
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