Oven will not turn on at all; display is blank and no lights or sounds.

Safety first: You are working with 240V circuits. Turn off the breaker before opening any panels. If unsure, call a professional.

Step-by-step checks:

• Check breaker: Verify the range breaker is ON and not tripped. Reset if necessary.
• Inspect terminal block: Remove the rear cover over the power terminal block. Look for burned wires or loose screws. Repair or replace damaged parts.
• Test incoming voltage: With a multimeter and proper safety, confirm ~240V across L1 and L2 and ~120V from each leg to neutral.
• Check thermal fuse/high-limit: Locate any thermal fuse or high-limit thermostat in the wiring diagram. Test for continuity; replace if open.
• Control power: If power is present at the terminal block but the control is dead, the line filter or EOC power supply may have failed and the EOC should be replaced.