In this video, we will analyze in detail what the primary and secondary power supply circuit is, how to diagnose the primary and secondary power supply circuit on iPhones and phones of other brands, and you will also learn what types of diagnostics are. What is additional diagnostics and why is it needed, as well as how to carry it out. Let's talk about the currents that are in the primary circuit and the currents in the secondary circuit. I will also tell you how to properly connect any phone to the laboratory power supply. What readings should be on the laboratory unit when diagnosing the power circuit. In general, see and learn about typical phone malfunctions and the method of their diagnosis.
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