People are undoubtedly pleased upon getting their Apple phone that is the highest-tiered smartphones like the iPhone 6 or iPhone 6, iPhone 7, iPhone 7 Plus, etc. But a few months later, many owners were vexed when devices issues began to emerge. Maybe you went through these process that is iOS 11/10.3.2/10 update, screen replacement, restore from backup, update iOS to previous version, etc. But the iPhone cannot boot again, you don't know the reason and it is the software or hardware problems. Now Vip Fix Shop Team will show you the fix process that is iPhone 6 cannot boot under the retain data situation.
Phone fault: The iPhone 6 doesn't boot, the boot current is 700mA. Picture 1-1
Fix process:
Disassemble the iPhone by phone opening tool, take out the iPhone motherboard. Connect it to DC power supply, the boot current shows 700mA, which means there is a power supply short circuit. Picture 1-2
Open the phone circuit diagram and check it, we can find that the diode data of PP1V8_SDRAM is low. Picture 1-3
Measure the diode data the PP1V8_SDRAM with multimeter, the data only have around 100, it is lower than normal data. Picture 1-4
According to the repair experience, this group abnormal power supply was caused by damaged capacitor at lower right corner of iPhone CPU. As shown in picture 1-5. We just pick it off.
After remove it, measure the diode data again, now the data is back to normal. As shown in picture 1-6.
Finally, assemble the iPhone and test it, now it can be successfully powered on and smoothly into the IOS system. Picture 1-7.
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