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.
NO booting hanging the screen of HUAWEI Mate 30 Pro, replace the decryption battery and repair the fault.
Redmi 10X 5g version does not have Baseband, c4023,Short circuit, replace c4023, and repair the fault.
