Hello, I'm a beginner to repairing electronics, so recently I was watching a youtube video and this person opened up a power supply and he knew which components where in parallel and series, so I was wondering what is it I should look out for to be able to know??
Before getting any injury attempting to repair, learn basic schematics of switch mode power supplies. from schematics you can easily know the arrangement of components. then try to understand principal of operation and function of each components.
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Consider two connected components A and B, each having two terminals. If one terminal of A is connected to one terminal of B, and the other terminal of A is connected to the other terminal of B then the components are in parallel. If A and B have only one terminal in common then they are in series.