Our oven will broil, but won’t turn on or will unexpectedly shut off when set to bake.
Unplug the unit
Remove the bake element
It is a good idea to clip something onto the wires (clothespin or something) so they do not disappear into the back of the unit.
Measure the element with a meter for continuity.
Also check that the insulation on the element is OK (no bubbling etc.
Also check that the connectors to the element are OK.