Washer-dryer combo will not power on at all; no lights or display, but outlet has power.

Safety first: Turn off the circuit breaker and unplug the unit before opening any panels. High voltage is present at the terminal block.

Step-by-step checks:

• 1. Confirm outlet power: Test the wall outlet with another appliance or a meter to ensure proper voltage.
• 2. Inspect power cord and terminal block: Remove the rear cover over the terminal block. Check for burned wires, loose screws, or melted insulation. Tighten connections and replace damaged parts.
• 3. Check line filter: Locate the line filter module near the power entry. Inspect for burned components or loose connectors. Replace if visibly damaged.
• 4. Inspect main control fuse (if equipped): Some Monogram boards have an onboard fuse. Test for continuity and replace with the exact type and rating if blown. Investigate cause of failure.
• 5. Replace main control board: If power is present at the board but there is no response from the display or controls, the main control board may be defective and require replacement.

When to call a technician: If you are not comfortable working with high-voltage circuits, contact a qualified technician for diagnosis and repair.