take the back panel off.on the right there is a thermostat mounted the the oven frame directly behind the oven cavity.it will have 2 wires too it and will be mounted with 2 pozi screw.if it is blown open circuit which i suspect it has then you will get the problem you have.replace the stat with a new one which is now part of a kit with wiring due to the problems of it blowing!
ck, November 2010