Oven element quit working. Changed element and it still will not work. Display screen lights up on panel. Can only find one fuse. Changed that and it still doesn't work. Cannot find the manual. Have any ideas?

Use a meter and see what is happening. Trace the circuit and find where you are losing power. You will never be able to fix anything electrical without testing circuits with a meter. The element may have been good. Did you check it with an ohm meter? DrTom4444