Hi,Welcome to Just Answer, My name is XXXXX XXXXX forward to helping you today.
If you tried the clock button for 3-5 seconds and it didn't come out of sabbath mode and you get no digital readout the control has failed. do you have a full model # ? I need to make sure theres no thermal fuse in this that could cause your issue.
I found the resetable thermal cut off switch and reset it, put a ohm meter on it and it is not open. I checked connections, and they are good. I checked for power on both sides of thermal switch and have 120 volts so switch is good. I have power on the connections on the control pad.
Manufacturer Number 5701M648-60 sorry for the bad news.