Re: Stall and Control box
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Hi Alex, That's a good puzzle.? No clear answer, so I'll suggest some ideas to try. The stall to me means the optical decoder didn't move, or it's sensor didn't detect it move, when the Gemini sent power to the motor. It seems like a cable connection is making poor contact.? So when you changed Gemini units, perhaps the cable made a better connection.?? So: Is it the one faulty Gemini?? If you put the "faulty" gemini on a different mount, does it say "Stalled" on that mount too?? If so, points to a weakness in the faulty Gemini, perhaps a bad cable connector socket.?? I am thinking the clues also point to a likely bad cable or cable connector.?? I suggest: use the faulty Gemini on the mount that reports a Stall.?? Determine which motor is reported as Stalled.? Either RA or DEC. Then swap the RA and DEC cables.? Of course the RA is too short for full use, but it's probably long enough to try for this "startup stall" problem evaluation. If the problem persists with the same motor, then it might be a bad connection at the motor.? Try reversing the ends of the cable, and look at the cable pins for corrosion.?? If the problem moves with the cables, it points to a bad cable.?? If the problem goes away.... hope it stays solved.?? Best of luck, Michael On Tue, Jul 14, 2020, 10:45 AM alexmcconahay <alexmcconahay@...> wrote: On startup, either cold or warm, my GM8 Gemini 1 has a motor stall.? |
Michael Herman