On dual-fuel Bertazzoni ranges, gas cooktop works but electric oven does not power on at all (no lights, no display).

Safety first: Turn off power at the breaker before accessing the rear of the range or built-in oven.

• Check breaker and supply: Verify that the dedicated oven/range breaker is on and not tripped. Reset if necessary.
• Inspect terminal block: Remove the rear cover and check that all power connections are tight and not burnt. Repair or replace the terminal block if damaged.
• Check internal fuse: Some control boards have a replaceable fuse. With power off, test the fuse for continuity and replace with the exact type and rating if blown.
• Inspect power cord (if applicable): For freestanding ranges, check the cord and plug for damage. Replace if any defects are found.