new tea kettle burned out both the element and the control

After replacing the dual element and still having a problem with the range, I started troubleshooting the switch. Fortunately, our range has 2 dual burners, and the switches are the same, so I was able to move the switch and see the problem follow the switch (also, using a VOM, I could tell there was a short in the switch).
Since I'd already replaced the element, I only had to work on the controls, which are very easy to access.
I carefully documented all the connections (took a couple of pictures as well), and swapping out the switch took almost no time.
Lesson learned - follow the manufacturer's requirement to use only cookware with a flat bottom. This tea kettle only sat flat around the outside edge. That caused both the element and switch to blow. The "hot cooktop" light stayed on constantly, even after the element was replaced.