Repaired: iphone 5s Gets Hot When Charging

A client sends a message called "iPhone 5s battery gets hot when charging and it is not durable." This is a frequent occurrence for many phones, but few people know how to solve it. Now this article will tell you how to fix your damaged iphone 5s. All of tools you need will be found at vipprogrammer.com.

PROBLEM:

The battery gets hot when charging and it is not durable. Plug the charger to charge for half an hour, finding that the iPhone is very hot and the temperature is nearly 70℃. Turn if off at once and tear it down to test.

SOLUTION:

1. First, replace the Charge Jack cable, but the problem is still the same. Tear down the motherboard and measure each relevant circuit.

2. Measure the diode data to ground of each pin, such as charging tube Q2, USB Control chip U2 and USB interface J7. We find that diode data to ground of pin 26th of USB interface J7 is abnormal which is larger than the normal one 20. The location of pin 26th of USB interface J7 in bitmap is shown in picture 1-1.

3. After analyzing the circuit diagram, we know that pin 26th is connected to USB management chip U2. So replace U2 chip and turn on to test. But the problem is still the same. 

4. Then we continue to check the rest circuits. Remove Q2 and short connect the D pole and S pole on solder pad, as shown in picture 1-2. The location of Q2 is shown in picture 1-3.

5. Recharge it and test. IPhone is no longer hot and trouble is removed.