Per others' recommendations, replaced the relay computer board and while I was at it, the right front cooking element - which only had the 'outer' rings working/heating up and NOT the inner rings. Took me a couple of hours for both repairs, since this was my first time and I was working alone. Took a bit longer to carefully 'work loose' ALL the terminals/plugs, remove the back of the stove, etc., but EVERYTHING appears to be working properly!