The iPhone 8 Plus has boot failure, it can't be turned on. Can we fix this dead iPhone 8P? Yes, we can fix it here!
After try some simple software solutions, such as force restart iPhone, update IOS, restore iPhone 8P, but the iPhone 8 Plus still not turning on. Now we need to check iPhone hardware aspect.
First, we need to disassemble the iPhone 8P.
Use phone opening tools to disassemble the iPhone, we found the
iPhone motherboard is already badly deformed.
Second, measure the iPhone 8P.
Connect iPhone motherboard to the DC power supply, it leaks 280mA. For the badly dropped
damaged iPhone, we need to check iPhone motherboard to see if there are visible
signs of damage to its appearance.
Third, observe iPhone 8P
Put iPhone motherboard under the Stereo Zoom Microscope to observe, we found the U3700 camera
power supply IC is cracked, use tweezers to remove this IC first.
After remove this U3700
IC, connect
iPhone motherboard to the DC power supply again to check if it causes leakage
problem. No leakage phenomenon when it is connected, next we need to power on
it to check.
After power on iPhone, the current jumps
from 3400, which is abnormal, there is short circuit place.
Fourth, repair iPhone 8P
For this current error, usually we need to
measure it by digital multimeter. Measure more than 10 power supply
circuits from power output to see if there is a short-circuit place.
We found the short circuit place when
measured C2906 this capacitor, remove the connected capacitance，here are 2
capacitance are overheated, we need to remove them too. Now, measure it again,
the data is normal. Next press the iPhone power button, now the iPhone can go
into the system.
Finally, install the iPhone 8P
Install the iPhone 8 Plus, and then press the iPhone power button, the iPhone can be turned on smoothly.
Get into IOS, test all functions on iPhone, all works well.
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