You say it stopped working. Is there power to the unit? what are the symptoms? Brand make model.
Appliance parts pros have answers to your questions and often fixes are not that complicated. As far as the comment regarding repairing
older appliances to that I say hogwash. Dryers are tossed due to non heat..10 dollar sensor.... water pump on washer 25 dollars or less...Of
course I am
handy and can repair my "stuff". There is a "handy man" near you, look on CL or other sites, mobile RV mechanics that can give a fair and
accurate estimate of what you are facing.