Patrick - for the FOURTH time you fail to mention the make and model of your oven - it might not make any difference - but then again it might.
You do not mention having checked the fuse in the plug.
Your two statements - No Power getting to the oven - And something inside the oven having packed up - are not consistent with one another.
I advise that you call in a service engineer else it's microwave cooking in future.
Good Luck...
March 2017