On Wed, Mar 12, 2025 at 11:24 AM, <francomeconi@...> wrote:
As soon as I powered up the mount the RA motor started slewing at a very high speed, I had to almost immediately shut down the gemini to prevent the telescope from crashing into my pier. When I turned it back on the same thing happened, so I disconnected the motor cables from the Gemini and ran the setup using the hand controller (date and time, location, mount type, etc). I then switched it off, reconnected the motors and switched it back on for a warm restart, it seemed to be ok at first but as soon as I pressed one of the RA buttons on the hand controller the RA motor ran wild again at max speed, trying to slew west (I'm on the southern hemisphere, so that would be slewing east in the northern hemisphere, or lets just call it clockwise if you're behind the mount facing the celestial pole). When I tried to counter this slew with the hand controller it would show a MOTOR STALLED message on the hand controller. I tried replacing the battery again for the old one but the problem is still there.?
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Hi Franco, and welcome to the group! Unfortunately, the uncontrolled slew or Stalled message indicates that Gemini has a problem reading servo encoders. This could be a problem with the motor cables, but more likely, a problem with the motor itself.
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Regards,
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? ? -Paul
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