I have some experience with gadgets and need a good site that’ll guide me through the nitty-gritty of monitor repair.

Answer:
You can begin with the LCD monitor repair site. It's an extraordinary knowledge base for computer monitor repair with schematics, manuals and videos for repairing LCD Monitors competently (specially if you like tinkering with electronics yourself… or want to learn a thing or two about LCD repair). It's a frequently updated resource, which is why I use it the most for my technical work.