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iPhone 12 Pro Max can’t be turned on after entering the water
Machine model:iPhone 12 Pro Max
Fault phenomenon:iPhone 12 Pro Max water damage no booting.
Repair process: get the mobile phone customer’s mobile phone, the customer described that the mobile phone was disassembled and cleaned, turned on for testing, and Stuck on Apple logo was restarted.Apple boot Stuck on Apple logo restart is basically caused by Accessories. The board is powered on and found to be able to enter the system.
iPhone 12 Pro Max can’t be turned on after entering the water Figure 1.
Replace Accessories in turn to eliminate the problem of Accessories.When the earpiece FPC is replaced, it is found that it cannot enter the system after it is installed. Replace a determined earpiece FPC and iPhone 2 Pro Max or restart it. Observe that there are traces of water damage in the middle layer of the motherboard.separate finds multiple chips corrode on the motherboard.
iPhone 12 Pro Max can’t be turned on after entering the water Figure 2.
Looking at the drawings, we know that the chips of water damage corrode are flash VCC chip, U1 chip, NFC chip and logic EEPROM.
iPhone 12 Pro Max can’t be turned on after entering the water Figure 3.
Remove the chip with corrode, check that the PAD and the chip are not damaged, and then remove each water damage chip and reload it.
iPhone 12 Pro Max can’t be turned on after entering the water Figure 4.
At this point, the iPhone can be used normally after the maintenance.
iPhone 12 Pro Max can’t be turned on after entering the water Figure 5.
