Here are all the components that were inside your Neato that have been removed and then reconnected to the Rev-64 main board so that any type of test can be performed and observed. There is also the ability to monitor and send commands to your Neato using a PC and the Neato update tool driver. In this picture the connection was established using "Tera Term" and a USB-A to USB-mini cable.
All Neato components are available for purchase. The drive wheel assembly is not shown but also available. Just send me a message using the "Contact Me page" and request pricing for the parts you need and your location. I will send you the cost as well as shipping fees. Then you can make a paypal payment to the email in the reply to you.