It's a real pity that this isn't solved yet!
When you say the mount slews, do you mean it starts to slew and then doesn't complete the slew to the home position? If so, perhaps the mount is hanging up on one of the internal cables. Have you added any "through the mount cables" at all? Did the mount come stock, or used? If the latter, perhaps a cable was added and now causes the hangup? If you put both axis in unlocked position and move the mount around do you detect any binding or noise in the housing? What happens if you command the mount to go to home with the mount in the unlocked position? If I do that on mine the motors run but of course the mount doesn't slew. I don't know if they run forever or time out after a while but it might help figure out what is going on.
Sorry, but if just sending the command to slew causes the error message I really don't have an idea other than to wonder if the board is ok?
Peter
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