hi ive changed element and oven still has no heating

Cooking Sunday lunch , the electrics tripped in the house and since resetting the electrics the main oven has no heat.

Oven switches not lighting up but has power going to it

Other setting working

The thermostat light isn’t coming on when any of the options are clicked and the temperature is changed. The Top oven can be heard turning on and off.
Any help in this would be great.
Thanks

Main oven overheating. Temperature light stays on all the time. Do i need new thermostat or elements. Which part. Also have you got the part i need in stock?

I select any function, oven, grill, light etc. Only the top fan activates. No heat either from rear element or grill element and rear fan does not activate. Turning temp knob I can hear switching. LED lights not functioning either.
Not sure where fault lies, any help advice gratefully received

unable to find the fault.
I was baking a bread at fairly high temperature, when there was a bang, lots of smoke, and the power tripped. I put the power back on, and the oven was running again. The fans came on, but the oven did not warm up any longer. I opened up the entire oven. On the white insulation at the back where the wires go in to the fan elements, are black stains.
But when I test the fan elements, they both test for continuity between their main poles, and open circuit between the poles and the ground. The elements are not warped or cracked or show any physical sighs of damage. What else could this be? Any suggestions where else I can continue to investigate?

When replacing the heating element I short-circuited the system. Since then, the light stays on. Obviously one of the two control knobs (oven or fan-oven is wrong. Which one? Also how do I disassemble the push-push relevant switches with no screws visible front or behind plate?

The oven selector switch looks ok. But one of the jumper wires is charred where it connect to the switch. How do I get hold of a new jumper wire?