The most important point is the premise: you must be interested. Home appliance maintenance, electronic circuit design, software programming, etc. They are all interesting, but you can't learn by patting your head and wanting to learn. Of course, this is definitely a process from shallow to deep. In this process, we can constantly cultivate new interests and improve our cognition by overcoming some difficult problems ... In fact, many industries are like this.

Theoretically:

A. Master certain principles of electrotechnics (find some books in this field), understand the basic circuit diagram, and know what the schematic diagram and wiring diagram are;

B understand why TV (cathode tube, that is, CRT TV, which is the foundation) and microwave oven were invented. What is their basic principle, as simple as studying a dimming desk lamp, why it can be dimmed and how to realize it? Take an electrical appliance as a breakthrough, and gradually understand various electronic components, which are basic components and which are complex components?

C any circuit is realized by the combination and action of different components. The wisdom of many people is integrated here. Only by "knowing why, knowing why" can you truly become an electronic enthusiast. Only by knowing the electronic circuit first can you know how to repair the broken electrical appliance.

Actually:

A. Every household appliance is the crystallization of human wisdom. If there is an opportunity, you can break down some things to study as much as possible on the basis of mastering the above basic knowledge. The premise is that you must make sure to restore it to its original state. If you are not sure about the recovery, don't tear it down first, which means that your ability can't cover its complexity. From shallow to deep, from big to small, cultivate hands-on ability, cultivate their own spirit of exploring the unknown, further understand and remember unit circuits, and even build some basic circuits to verify their own theories. Understand the purpose and function of its design, discover the design rules and accumulate experience. There is no shortcut, but the experience you get is not available to others!

B you can also gain experience from maintenance experts, whether through word of mouth or through the internet. Register some websites and forums, read more first, then understand and express your own views, and then publish excellent papers ... so as to constantly learn from the advantages of others and enrich your own shortcomings. Interest is still necessary-try to understand others' sense of accomplishment from success, solve their own problems, and enjoy the joy they get from failure or success ~ ~ ~

Also, if you have the opportunity to get close to the master, you can work with him for a year and ask for advice humbly. This is the shortest way to gain experience.

C. if you want to learn to swim, you must not be afraid of water first. Similarly, if you want to learn electronics, you must first have the courage not to be afraid of electricity. It is not easy to be bold and cautious, and many home appliance maintenance experts are pursuing this goal! Otherwise, everyone can succeed in one step and there will be so many failures and lessons.

D. Home appliances are always at the forefront of science and technology, and only by continuous learning can we "guarantee the first". However, one rule remains unchanged: anything new is developed and invented on the basis of the old; Anything complex is made up of simple units. Therefore, foundation and experience are most needed, and even two things that were previously considered irrelevant can be linked to foster strengths and avoid weaknesses. With these fundamentals, you can constantly draw inferences and create your own myths.

E. electronic maintenance tools have never been mentioned. In fact, it goes without saying how to use multimeter, oscilloscope and soldering iron. As your interests are constantly developed and mobilized, they will naturally not become a stumbling block on your road. Instead, they will be good helpers to help you.

Having said that, the key is to look at your actions. Success depends on yourself, at least not on your talent like learning piano. Piano can't be taught without a teacher, but maintenance, 100% can!