Joseph Protheoe you did not tell us if it worked before you changed the batteries. You want to make sure that the battery contacts are not corroded and make proper contact. If that checks out you want to disassemble it and take a look at the belt. Here is [guide|6113|a teardown] that will help you get into it. check the belt as well as the board for anything obviously damaged. Let us know what you find and it might help if you post some images with your question. For that use [guide|21499|this guide]. It will allow us to see what you see.