This wide- and large- screen layout
Years ago it was common for individuals to fix (or hack) their own stuff. DIY became less common as the things people own became more customized (rather than using standard parts), and harder to work on, partly because everything is so small and partly because the needed exhaustive documentation no longer comes with every device. It became more and more common to see No user-serviceable parts inside, and for most folks to believe this whether or not it was actually true.
Until recently there was less and less alternative to having a professional handle every fix. But it was often slower and significantly more expensive than doing it yourself would have been if that were possible. Fortunately the internet has made DIY fixes possible again, making it easy to find tricks of the trade, step by step instructions, documentation, and parts. Just a little web searching will usually turn up everything you need; often the key to finding things is as simple as the model number.
Here's a collection of mini-projects I've undertaken myself, illustrating several different useful techniques: