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Machine model: iPhone 11
Trouble phenomenon: mobile phone no booting
Repair process:
I received an iPhone 11 from the customer, disassembled the machine and tested the power meter, and found that the mobile phone motherboard Short circuit, used multimeter to measure the battery VCC diode value to zero, and gave the mobile phone separate, measured the main VCC, diode value was also zero, the problem should be the main VCC By the way, since Short circuit is on the upper layer, we observed the upper motherboard and found that a main VCC Capacitor has obvious abnormalities.Remove this Capacitor and diode value to return to normal, and restart the welding mobile phone to start normally. At this point, iPhone 11 mobile phone no booting malfunction repair is over.
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Post time 2021-12-06 18:20:23
