Address
304 North Cardinal
St. Dorchester Center, MA 02124
Work Hours
Monday to Friday: 7AM - 7PM
Weekend: 10AM - 5PM
iPhone 12 Pro MAX Substance does not boot fault repair
Machine model: iPhone 12 Pro Max
Malfunction: Fall hard turns on no booting.
Maintenance process:
screen Glass and the back cover of the are severely broken, the middle frame is broken, and no booting is turned on, as shown in the following figure:
iPhone 12 Pro MAX Substance does not boot fault repair Figure 1.
iPhone 12 Pro MAX Substance does not boot fault repair Figure 2.
When the motherboard is removed, it is found that there are serious desoldering cracks in the upper and lower layers of the motherboard, as shown in the following figure:
iPhone 12 Pro MAX Substance does not boot fault repair Figure 3.
Separate the upper and lower layers, and find that Inductor L3300 near PMU of the upper layer falls off, as shown in the following figure:
iPhone 12 Pro MAX Substance does not boot fault repair Figure 4.
Take Inductor with the same volume and height from iPhone 11 disassembly board and install it, and Connect the power supply will start switch again. At this point,Fall hard iPhone 12 Pro Max mobile phone turns on no booting fault repair.
