Bro, just check out Kent Liew and Jestine Yong; these guys have some repair manuals (a bit expensive). But you can search for some e-books available on the Internet. I had some of these books years ago, which were really useful. These are written in English, but it's not super hard to understand repairing electronics concepts.
https://www.electronicsrepairfaq.com/ -- subscribe to the newsletter.
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