A soldering iron is a hand tool used in soldering.
It supplies heat to melt solder so that it can flow into the joint between two work pieces. If a power adapter is not working, doesn’t mean its spoiled. It may cause of a bad or blown capacitor. Replacing the capacitor with the same “V” and “µF” will make the power adapter work as new again. In SG Academy, we don’t teach students theoretically, but practically!