Safety first: Before opening the appliance, ensure the breaker is OFF. Only work on live circuits if you are qualified.

Check home breaker: Verify that the oven's circuit breaker or fuse has not tripped. Reset if necessary; if it trips again immediately, stop and investigate further.
Inspect mains connection: With power OFF, access the rear terminal block. Tighten all screws and look for burned or melted plastic. Replace the terminal block if damaged.
Internal fuse: Many Essentials ovens have an internal fuse near the mains entry or control board. Test for continuity and replace with the exact same rating if blown. Investigate why it blew (shorted element, wiring fault).
Check mains cable: Inspect the supply cable for cuts, crushing, or burn marks. Replace if any damage is found.
Restore power and test: After repairs, restore power and confirm that the display and oven light come on.

Oven does not heat at all, no lights or display, completely dead

Possible Causes