iPhone 12 has no signal, the mobile phone is stuck when inputting the password, and the middle layer of the main board is not as good as welding, and the fault is repaired after welding is renewed.
HUAWEI nova 7 does not turn on for repair, the main VCC,Short circuit,The rosin smoke method, found the faulty coder chip, replaced the coder chip, and repaired the fault.
iPhone 11 Pro consumes fast power when in standby, mobile phone short-circuit current 20mA, replace a USB VCC accessory chip, troubleshooting.
HUAWEI Mate 40 Pro starts screen is black or frozen，Scraping out the wiring,Jump wire is connected to PAD, and welding small board is renewed,the fault is repaired.
HONOR 9X can't turn on WiFi. Remove Fuse resistor of corrode and repair the fault.
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iPhone 12 does not turn on, main board Short circuit,The rosin smoke method, start Current heating test, remove the problem Capacitor, and repair the fault.
HUAWEI P30 cannot be charged,Capacitor,PAD,auto power off,Jump wire,GND, install Capacitor, and repair the fault.
iPhone 11 Pro standby power consumption is very fast,short-circuit current 20 mA, replace a USB chip VCC, troubleshooting.
OPPO R17 speaker has noise.Solder Mask is used to screen the copper leakage of charging connector small board and repair the fault.
After iPhone 7 water damage, there is no signal. Clean the place of corrode, start test and repair the fault.
