Installed new Beaver boards on my 3yr old Nexdome. The shutter isn't communicating with the rotator. Error message COMMS DOWN! Of the 3 LED's, the 2 on the ends are flashing on/off the one in the middle does not come on. The toggle switch on the shutter works but it doesn't connect for pc operation. I'm sure I'm missing something. Any help is appreciated.
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