How to Open a power supply without destroying a transformer

First of all, please DO NOT attempt to open any power supply and tweak what's inside unless you know what you're doing and/or are a professional. With that said, this circuitry video will teach you how to crack open a wall transformer power supply without destroying the transformer.

You can use this process to power a circuit with a power pack. Remember to be safe and turn off the power when you start.

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