The horn of Xiaomi 11 Pro has no sound. The fault of power amplifier is still the same after changing the ring tone. Finally, the CPU is redone and the fault is repaired.
HUAWEI P30 restarts from time to time, remove the CPU and restart REBALLING. After handling the motherboard PAD, the fault will be repaired after replacement.
OPPO renlme really can't start the machine. After replacing the CPU RAM, the fault was repaired.
HUAWEI nova 2s has no sound. The fault of Jump wire short Connect the power supply capacity is still the same.charging connector BTB connector Inveracious Soldering was found. It was removed and reassembled, and the fault was repaired.
iPhone 11 cannot connect to WiFi and Bluetooth,after cleaning up PAD,the repair is over.
HUAWEI Mate 30 Pro screen does not display, AMOLED is found in the test_There is a problem in the connection between avdd and Capacitor. Remove the problem Capacitor and repair the fault.
After HUAWEI Mate 40 Pro Fall hard, WiFi and Bluetooth can not be connected. Connect Crystal pin with WiFi connection point by cable, and reset welding motherboard to repair the fault.
SAMSUNG Galaxy S21 can't be turned on and cannot be charged. After charging the battery, the mobile phone can be turned on. However, when the battery is charged to 60%, the current will be very small or even zero. After the battery is replaced, the fault will be repaired.
After HUAWEI Mate 40 Pro Fall hard, the screen and shell glass cracked into spider webs. After dismantling the machine,Inductor was replaced and the CPU was replaced. The mobile phone can be turned on.
Redmi Note 9 Pro cannot be charged. It is found that The solder tin extruded exists in the charging Current protection tube, and it is broken down. Remove it directly and repair the fault.
