No heat after cleaning oven

This built-in oven was slid out of it's space and set on a box. I removed the back cover with nut driver and located the safety overload device. removed nuts and used pliers to remove wires and replace them. The power must be off to do this repair.Replaced the cover and slid back into place. This could be a lot more difficult if your power cord or gas line is not long enough to make it out of your wall space. Or of your oven is attached well to the frame.