Frigidaire Electric Double Wall Oven - Elements stopped working one by one

[adam2u]

I have a problem a Frigidaire PLEB27T8CCB double electric wall oven. First the Top oven Broil stopped working, then a few days later the top oven Bake stopped heating, sometime later the BOTTOM broil element stopped heating and finally the bottom bake element stopped thereafter. The display, lights, convection motor all work. The elements seem fine.
I suspect that the relay boards (two, I believe) might be the problem, as one board has a transformer that could be failing. Anyone have an opinion as to the problem and what I need to fix it. Thanks.....

[JWWebster]

This Oven limit of yours looks like it is resetable. Have you checked it?