After iPhone 7 fell, the cell phone signal was not good. After detection, it was found that Baseband CPU pad break off caused it, and Jump wire repaired the fault after repairing the point.
The charge of the A5 mobile phone becomes less and less. Measure the connected components to determine that the D2903 is damaged. After being removed, the fault will recover.
Acer E5-471 laptop Won't Turn On, with oscilloscope, can easily find the fault point and repair it perfectly.
The mobile phone of Huawei Mate 30 Pro has no signal. After Repeat welding and Repeat welding are performed on the power chip,Repeat welding, installation test and fault repair are performed again.
iPhone 7 mobile phone Stuck on Apple logo restarted, and after detection, it was found that the charge management chip U2101 was damaged, and the fault was repaired after replacement.
Lenovo X270 notebook Won't Turn On, after detection found to be caused by a resistor damage, re-welding on a fault repair.
The iPhone 8 Plus phone cannot be charged. It is found to be pp3v0_ It is caused by the short circuit of S2 power supply to the ground, and the fault shall be repaired after replacement.
Honor V30 Pro mobile phone screen doesn't light up, and it is found that the fault is on Inductor, so the Inductor connected to MIPI bus is reset and the fault is repaired.
iPhone Face ID id is unavailable and not charged. The detection found that the resistance damage caused the non-charging, and earpiece FPC was broken without Face ID.
