Huawei P40 Pro camera can't be turned on, no sound, no WiFi and no Bluetooth, which is most likely caused by camera MOSFET.
Glory 20 mobile phone can't boot, usually this is basically the upper cover, but because it is two repairs, first put the CPU to keep it, and then the machine is lit.
iPhone 11 Won't Turn On,The rosin smoke method Dafa found the problem Capacitor, and repaired it after replacing it.
Huawei P30 Pro WiFi can't be turned on,Fall hard caused the whole chip pad break off to be repaired, the short-term line was restored, and then the WiFi chip was put back for fault repair.
After Fall hard, WiFi cannot be turned on. Carefully observe the motherboard and refer to Xinzhizao Soft drawing. It is found that CLK is disconnected, and Jump wire is repaired.
iPhone X has no service, open Xin Zhi color drawings, find points map, see the trace between the upper motherboard and the lower motherboard, found that there are two signal lines, add the point to the point, fault repair.
Xiaomi 6 earpiece has no sound, and it is repaired silently outside. This fault should be caused by the communication line coder power amplifier chip and CPU Inveracious Soldering. After Repeat welding, it will be installed and tested, and the fault will be solved.
Huawei nova 6 serviecs can't make calls, which is mainly caused by the disconnection of high, medium and low frequency transmission lines in Baseband signal part.
iPhone wifi signal is not good, refer to Xinzhizao Soft query software, measure ANT BTB connector to ANT Switch PCB circuit defect,Jump wire, and repair it perfectly.
iPhone 6S Plus water damage can not be started. It is found that corrode on the side of USB chip is relatively serious, and the tin bead under PAD is also corrode. Replace the USB chip directly and repair the fault.
