Oven does not heat at all; display and lights work, but no warmth in bake or broil modes.

Safety first: Turn off power at the breaker before accessing rear panels or element terminals.

Step-by-step checks:

• Try both bake and broil: If neither mode heats, suspect a common supply issue (thermal fuse, control board, or power supply).
• Inspect elements: Look for visible breaks or burn marks on the bake and broil elements.
• Continuity tests: From the rear, disconnect each element and measure resistance. Replace any open elements.
• Check thermal fuse: Locate the thermal fuse or high-limit thermostat on the rear or top of the oven. Test for continuity; replace if open.
• Verify output from control: If comfortable and qualified, check for voltage at the element terminals during a call for heat. No voltage with good elements and fuse indicates a faulty control board.

When to replace parts: Replace the bake element or broil element if open. Replace the thermal fuse / high-limit thermostat if tripped. If all are good and no power is sent, replace the electronic oven control board.