Examples of problems of Mac devices

•  Excessive overheating

• It turns on, and immediately turns off;

• Liquid spill on keyboard

•  Video chip/unsoldered components

•  False contacts or damaged electronic components such as mosfet transistors or resistance

•  Power surge

• Power LED on, the fan runs and the screen remains black, the hd does not power on, it emits beeps at startup and does not turn on;

• Short circuits

• Continuous loop on startup;

• It doesn't display correctly;

• Constant system errors while using

•  Turns on and off immediately;

•  Not showing signs of life despite the power supply delivering the correct voltage

•  not charging battery

•  Doesn't load mac os operating system: leopard, lion, mountain lion, mavericks, yosemite, el capitan, sierra

•  Network connection not working properly;

•  Wi-Fi AirPort Card Devices, not working;