Opening and closing an oven door is quite possibly, one of the most important aspects to an oven. If you aren't able to do that, then it becomes useless. One of the main reasons for it being useless is that fact that it might need some new hinges. These can easily be replaced and save you quite a bit of money.
In this tutorial, you'll find out how to replace the hinges on a Smeg oven door. It may not be the same for your appliance, so check the manual before attempting and good luck!