iPhone 12 Pro Max Black Screen and Power-On Failure: Repair Guide
Device Model: Apple iPhone 12 Pro Max Symptoms: The customer reported that their iPhone 12 Pro Max Screen suddenly went black and wouldn't turn on. Despite charging the phone and attempting a forced restart, there was no response. Connecting the iPhone to a computer also yielded no results. The customer urgently needed access to important work data and had previously visited a local repair shop without success. Repair Process Power-On Test Conducted a power-on test by AiXun P3208 Power Supply , which revealed no signs of activity. As the customer had already determined it was a motherboard issue, proceeded with the disassembly. Disassembly Removed the screen and battery. Noticed that the motherboard's shielding had been removed and there were traces of prior repair attempts. Layer Separation Placed the motherboard on a iRepair MS1 preheating platform to separate the layers. During this process, the CPU detached from the motherboard. It was apparent that the CP...