Here is a replacement way for replacing iPhone iPhone 11 Pro Max A13 upper layer. Use screwdriver to remove the screws at the bottom of the iPhone screen, open the screen with a LCD sucker. Remove the iPhone display screen, disconnect the battery, and then take out the iPhone 11 Pro Max motherboard.Put iPhone 11 Pro Max motherboard to the SS-T12A heating station for separating the board, take off the iPhone 11 Pro Max motherboard upper layers, and attach it to the MJ K30 PCB holder.
Put iPhone motherboard under a Stereo Zoom Microscope to observe the A13 SDRAM, it looks good. Now use QUICK 861DW hot air gun and CPU removal blade to remove the A13 SDRAM, insert the blade from the right corner of the A13 CPU, and then slide to the top right corner. Once the SDRAM has been removed, next we need to remove the glue.
Use BGA removal blade to remove the glue on the CPU, and then clean it with PCB cleaner. Now connect the iPhone 11 Pro Max motherboard to the DC power supply to measure the current, after measurement, the current is normal.
Place the A13 upper layer to the right position, and then use hot air gun to install it back the motherboard.
Once down, cooling the motherboard, and then install the iPhone 11 Pro Max.
Press the iPhone power button, the iPhone 11 Pro Max turns on properly, and then test the iPhone functions, everything works well.
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