Bob, if you still have this microwave I wanted to let you know that the touchpad circuit board is most likely the problem, I did a little research for you because I have one of these myself, the RR 10A made in July 1980, and I wondered if you could still find parts, they are out there. I found relay switch kits on e-bay for $65. In my opinion fixing one of these is better than buying new. Partsselect.com may be some help, other than that you will have to google your model number. Hope this helps