Since it is new, you should probably return for refund or exchange.
My guess would be it is the micro switch controlled by the arm.
Make sure the power is turned on and the unit's function selection is set on PHONO and then gently move the tone arm to the right until you hear a "click". Remove any cassettes that might be in the cassette player. Lift the tone arm and carry it over to the beginning of the record.
TroubleShooting
This model number does not show valid, please double check. In general, if the surface burners work, then suspect a bad oven ignitor. Does the ignitor glow? If so, and the burner doesn't come on within 30 seconds, replace the ignitor, it's weak and not passing enough power to open the gas valve. If the ignitor does not glow then you must check the ignitor for continuity (replace if open/no circuit) and back check the circuit for lost power. If not the ignitor then suspect a bad relay on the control board.