Wait, no, just look at how the new DualSense controller works, and how it all came together. Sorry, these teardown videos always make me feel a little weird.
This great video with TronicsFix opens the pad, gently, and looks at all the parts and pieces, in part so that we can all look at some new things, but also check out how easy it will be to restore or repair any of these parts if something goes wrong.
The good news: apart from the causes, which are hard to come by, many other things seem easy to confuse with, if judged by standards related to the type of person you are confident about. anything else of this.