CONCERN: Customer reports oven is not working, locked door displayed on screen. DIAGNOSTIC AND CAUSE: Inspected oven for proper wall outlet voltage to the oven, Output voltage normal at the time of inspection. Inspected voltage input at the main control board, input voltage to the main control board normal at the time of inspection. Found oven main control board relay failed for door lock motor. Unable to obtain part numbers. model sticker not longer visible. Recommend replacing unit. Oven currently operating normal after manually operating door lock motor.