I currently have an Aerosmith Pro with the official Stern topper. It just stopped working the other day and I cannot figure out why. I have very little experience working on Spike machines so I am sure I am probably overlooking something. I checked the voltage at the power board and it is 48 volts like it should be. I assume there are no fuses in this machine because cannot find any other than the main line fuse? I'm not sure if the topper would be controlled by a node board but it only has two connections - the power, and a cat 5 going into CN12 on the MPU. Any help would be awesome. Thanks.