iPhone7 short-circuit current Won't Turn On, smoked Colophony (Solder), found that it was Capacitor that caused the troubleshooting after deduction, and the screen was not bright during the installation test, and the test display was normal after changing the test screen.
Huawei Honor 9X Pro can't be charged. Referring to Xinzhizao Soft drawing, it is found that USB can't be detected after being plugged in, which leads to the inability to charge, the 1K resistor is added and the fault is repaired.
Previously repaired ASUS x450v notebook computer headphone speaker does not sound, replace 5 chips tortuously.
The speaker of iPhone 12 Pro Max mobile phone has noise. After replacing the audio power amplifier chip, the fault is repaired.
The iPhone 8 plus screen does not display. It is found that an inductance is caused by a lack of parts through xinzhizao point. It is directly shorted and repaired.
Redmi K30 supreme edition Won't Turn On, direct Repeat welding vemc_PMU main power supply, vufs12_PMU Nand MOSFET u5601 these two power supplies, fault repair.
iPhone 7 has no signal no serviecs, does not recognize the card and does not charge.
Glory X10 mobile phone can't be charged. It can be charged when it's turned off. If you plug it in after you turn it on, it won't charge. If you know the secret, the solution is so simple.
iPhone XS Max mobile phone does not display intermittently. It is found that it is a broken line in the board layer. Through the board layer wiring diagram made by Xinzhi, the board flying line is scratched, and the fault is solved.
Apple MacBook Pro a1502 laptop screen does not display, replace the screen VCC chip after repair.
