How stuff works
Philip Le Riche and one other contributor
Last updated on Feb 25, 2018
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Community-Contributed Guide
An awesome member of our community made this guide. It was not created by iFixit staff.
Introduction
Go to step 1 ↓Many faults are plain to see if you only look. But when they're not, you need some level of understanding of how things work in order to make progress.
In the Restart Wiki we have a collection of articles covering everything from volts and amps to the theory of radios and power supplies.
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If you want to get up to speed quickly or revise the basics, this 50 minute tutorial based on a Restart training session is just the thing!
Ask FixBot
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If your volts, amps and ohms are a bit rusty (or even non-existent) then we have a simple introduction that anyone should be able to follow.
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Start off with Volts, Amps, Watts and Ohms - what every Restarter should know.
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So what's all this AC and DC nonsense all about, and why should I care?
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We have several pages covering electronic components - how to recognise them, what they do and how they sometimes fail:
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First of all, Resistors, Capacitors, Inductors and Transformers.
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Next comes Diodes, Rectifiers, Transistors and Integrated Circuits.
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Moving on, we look at Switches, Push-buttons and Connectors.
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And finally, protection components. Fuses, the common-or-garden variety, are only the beginning!
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Batteries come in all shapes and sizes, and different types, some rechargeable and some throw-away. Here's pretty much all you need to know.
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Finally for this section of the wiki we cover:
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Electric motors - different types and how they work.
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Power supplies - they quite often fail, and to fix them you need to understand how they work.
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How Radios Work. They contain a mass of components but if you at least understand roughly how they work you'll stand a much better chance of fixing them.
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Now, you're an expert!
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