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iPhone 6 Won’t Turn On repair
Machine model: iPhone 6
Symptom: Mobile phone Won’t Turn On
Maintenance process: disassemble the machine, connect DC power supply to find Connect the power supply large current Short circuit, take off the motherboard and measure PP_VCC_MAIN shorted to ground.
iPhone 6 Won’t Turn On repair Figure 1.
Microscopic observation revealed that the filter Capacitor C1552 on the main VCC PP_VCC_MAIN circuit had a solder ball on the side.
iPhone 6 Won’t Turn On Repair Figure 2.
iPhone 6 Won’t Turn On repair Figure 3.
Pick open or shorted to ground, direct The rosin smoke method Connect the power supply burn it, and immediately C1552 Capacitor on the Colophony (Solder)melt.
iPhone 6 Won’t Turn On repair Figure 4.
Pick out the Capacitor, the main VCC PP_VCC_MAIN ground diode value returns to normal.
iPhone 6 Won’t Turn On maintenance Figure 5.
iPhone 6 Won’t Turn On Repair Figure 6.
Installation and start-up test, the function is normal, and the maintenance is over.
iPhone 6 Won’t Turn On Repair Figure 7.
This fault is the no booting caused by the filtered Capacitor Short circuit on the main VCC.
