oven will not turn off

I have the above drop in range…
I developed a problem where the oven heat would not turn off…
have to switch off breaker box in the garage…
ordered from you a new ERC electronic control clock and had it installed…
all works great…burners and clock…as before…but oven will still not turn off…
with the "brains" of the unit now new…what could be my problem?
It must be something from the clock to the thermostat?
I hope that you can help…I can’t imagine that the stove needs to be replaced as on repair man said…especially now with the replacement clock…
Thank you …I hope that you can help me…
Gary Young