问HN：我该如何学习实用的电子维修？
在我的国家，二十年前有很多人掌握了基础知识。今天，这似乎变成了一门失传的艺术。<p>我希望把它作为一种爱好来接触，而不是达到电子工程师的水平，但足以进行故障排除和更换一些基本组件。<p>在这个目标上，什么是务实的做法？我认为这在未来会是非常有价值的。
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In my country, 2 decades ago there are were plenty of people who knew the basics. Today, it feels like a lost art.<p>I would like to approach it as a hobby, not like electronic engineer level, but enough to debug problem and change components to a low level.<p>What is the pragmatic approach in this mission? I reckon it will be valuable in the future that comes.