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IPhone 11 mobile phone can’t be started for repair.
Measure the short circuit to BOOST path, replace this capacitor, start the test, turn on the machine perfectly, troubleshoot, and repair it.
Machine model: iPhone 11
Malfunction: The phone can’t be turned on.
Maintenance process:
Received an iPhone 11, the phone can’t be turned on.
Dismantle the machine, connect the adjustable power supply, and don’t start the machine if you find that the connected electric current is too large. Layered detection of the main board indicates that the upper layer is faulty, and the BOOST path is short-circuited.
IPhone 11 mobile phone can’t be turned on for maintenance Figure 1
Rosin was smoked on the BOOST path, and a 4V voltage was applied to the path, and a short-circuit capacitor was found.
IPhone 11 mobile phone can’t be turned on for maintenance Figure 2
IPhone 11 mobile phone cannot be turned on for maintenance Figure 3
Replace this capacitor, start-up test, perfect light-up, troubleshooting, and the maintenance is over.
