Oven not working

My oven will not heat up at all. The stove top works and the broiler works. The element looks fine. I used it yesterday with not problem. Go to bake cookies with my kids, turn the oven on and it was on preheat forever. Need help!!!:confused:

most likley the bake element is defective .remove back cover =check leads for continuity with multimeter. un plug stove 0r shut off breaker to range. or check for 220 voltage with power on .be careful not touch with hands or zap

Can anyone give me guidance on replacing the controller board? How hard is it?

I have found a service manual for the Neptune series, is there any specific info in there to assist? Worth buying??

Thanks in advance for your help
-Jim