iPhone 12 Pro Max mobile phone Won't Turn On, check Boardview, it is found that it is caused by damage of Capacitor c4200 beside u4200. Remove Capacitor and repair the fault.
iPhone 12 PRO MAX boot Blurred screen Restart repeatedly, after replacing 256G Nand, boot is normal.
iPhone promox flash can't be turned on. According to Boardview and schematic, the working conditions of the chip were measured. It was found that U6500 was damaged, and the fault was repaired after replacement.
iPhone promox can't be charged. After disassembling the machine, charge the chip Short circuit, and replace it with a new diode value. After installation test, the charging is normal.
iPhone 12 Pro Max Won't Turn On, after disassembling and testing, find Short circuit Capacitor with The rosin smoke method method, and replace it with perfect repair.
Fall hard iPhone 12 Pro Max Open no booting, separate the upper and lower layers, and find that Inductor near PMU of the upper layer falls off, and repair the fault after replacement.
iPhone 2 pro max has no signal. after separate, the upper layer pad break off was found. after adding some useful points,welding tested Baseband for repair.
