4 Steps To Fix iPhone 6 Won’t Turn On Issue

The iPhone 6 has been dropped heavily, and then the iPhone won't turn on and overheating. Now we need to repair it step by step.

Step 1

Disassemble the iPhone 6 by JM-P01 Essential Toolkit, take out the iPhone motherboard and measure it with DC power supply, it shows large current when booting, about 1300mA.

Step 2

The boot current shows about 1300mA, which is abnormal. Put the iPhone motherboard under a VGA Camera 7-45X Trinocular Stereo Microscope to observe it carefully, we found the culprit on the motherboard. There is a capacitor has been penetrated, which caused the iPhone to turn on with an abnormal large current phenomenon.

Step 3

Now, we've decided to dismantle this capacitor. With the help of Hot Air Gun and Precision Titanium Alloy Tweezers, we succeeded in tearing down this capacitor. Using Fluke 15B+ Digital Multimeter to measure it, the diode data shows more than 300, it is normal. This circuit is iPhone Nand flash power supply 3V, PP3VO_NAND short circuit will causes iPhone won't turn on, and the boot current up to 1000mA.

 

Step 4

After removal, measure it again with 1503D+ DC power supply, the boot current is normal now. Install the iPhone well, and the press the iPhone power button to turn it on, now the iPhone 6 can turn on normally and smoothly into IOS.