iPhone 7 Can’t be turned repair Troubleshooting

iPhone 7 can't be turned on, and the DC power supply is connected to large current. The detection found that large current was caused by the main VCC Capacitor Short circuit. Troubleshooting after replacement.

iPhone 7 Can’t be turned repair Troubleshooting

Machine model: iPhone 7
Malfunction: The mobile phone can’t be turned on.
Maintenance process:
Received an iPhone 7 of no booting from the customermobile phone,DC power supply on the disassembling machine is large current, and large current is generally caused by VCC PP_BATT_VCC of battery or large current PP_VDD_MAIN with VCC or chip damage.

iPhone 7 Can't be turned repair Troubleshooting

iPhone 7 Can’t be turned repair Troubleshooting Figure 1.
multimeter is measured as Short circuit at the end of PP_VDD_MAIN, and it is found that there is a damaged Capacitor beside the power supply under the microscope.

iPhone 7 Can't be turned repair Troubleshooting

iPhone 7 Can’t be turned repair Troubleshooting Figure 2.  iPhone 7 Can't be turned repair Troubleshooting

iPhone 7 Can’t be turned repair Troubleshooting Figure 3.
Buckle C1877 Capacitor, troubleshooting.

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iPhone 7 Can’t be turned repair Troubleshooting Figure 4.

The boot test function is all right.

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iPhone 7 Can’t be turned repair Troubleshooting Figure 5.
Here, the maintenance is over.