You can't really do that on a lot of modern appliances, because what fails isn't user-repairable.
The gas dryer we had from the 50s could be fixed with a screwdriver and a pulse.
The electric dryer we have now that we live somewhere without gas has a $1200 controller board (that probably costs $4 for the manufacturer) that goes out every 2 years, so we end up paying a $250/yr maintenance subscription to get it fixed under the "extended warranty".