You have to do a troubleshooting check list.
verify power at outlet
is clock/control on?
is there power going to the igniter control?
is power going to the oven igniters when oven is on?
Is amperage 3.0 amps or better after 45 seconds?
If yes to all of those, then I would look into wiring.
I swear every time I get a problem like you are having, I find evidence of mice or rats in the oven. They love to chew on wires. Not saying that is what it is, just saying what I have come across when I see total oven failure.
But at least try and verify if you control is sending out power, or even responding.