Oven will not turn on. but stove top works fine. model#jgbs07pea2ww
A common problem is the heating element goes bad. I have had this happen and you can see a spot on the heating element which looks different from the rest of the element (a clue).
Many ovens have two heating elements. Upper and lower. Now I am no Julia Child, but I think bake turns on just the lower heating element? And broil turns on just the top heating element????
So I suppose you might have it on bake and it is not working. Might try broil and see if that works. If yes, then you are getting power through all the controls to the upper heating element, so good chance just the lower heating element is bad.
If you don't get heat to either the upper or lower heating element, then I would suspect the wiring or a control.
So far as the heating element, you should be able to remove it and using an ohm meter, get some sort of reading if it is good (I have no idea what though). Or open circuit if bad.
Also the insulation on older ranges can "melt" back exposing live wires! This is of course very dangerous and the wiring should only be replaced with high heat range wiring which I assume you could get at an appliance store?
Or the contacts on a control/switch could be bad. I would test this with a continuity tester or ohm meter.
Many appliances have a wiring diagram down low somewhere. Or might find it online.