The Quickest Way to Get Back to Life with a Roomba: No Need to Replace or Pay for Expensive Repairs Revive your Roomba that has stopped working due to a faulty circuit board or sensors. It can be used again by replacing the necessary parts. This is only the circuit board base unit (without screws). The following parts are required for use: ・Front wheel ・Tire modules (left and right) ・Edge brush module ・Main brush module ・Brushes ・Dustbin (for 980/985) ・Battery ・Home base ・Four back cover screws