Dell G3 3579 notebook does not boot, the fault is perfect after replacing the isolation tube and hard drive.
The iPhone 7 mobile phone black screen has no response, and the detection shows that the power supply open foot resistance value is infinite, and the problem is repaired after the flying line.
iPhone 6 screen failure, black Touch to touch the IC weld dot soldering, the flying line is normal.
Mate30 battery is not durable. Check that Boardview measures high temperature on Related circuit. After replacing this chip, the problem will be solved.
iPhone X screen shows Blurred screen. It is found that one VCC Inductor of GPU is completely different from the other one. It is determined that this Inductor is not original. After replacing the original Inductor, the fault is repaired.
iPhone 6S Plus is called no sound, consuming fast, replacing the audio IC, the phone is normal, and it does not consume.
Apple MacBook Air A1466 notebook Camera can't be opened. The waveform of oscilloscope found the fault point. After replacing components,Camera opened normally.
Huawei's Nova5i screen is not displayed. After testing, it is found that the power supply is damaged, which causes REG not to step up the voltage without 5.8v, and can not generate plus or minus 5.5V.
iPhone 8P card or not is no serviecs,GPS and WiFi signals are weak,earpiece sound is very low and so on.
