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Re: Runaway slew while using PHD2

 

Alan?

You are thinking it's a software conflict.? Your mount is selected in Stellaium as ASCOM and your chooser comes up. Make sure that shows the correct mount type.? If it defaults to Titan, I think it will slew further than a G11.?? I doubt that is wrong because you do get the correct position sometimes.?

I wonder if this is an intermittent hardware issue...either of 3 causes:

DEC cable.? ?Try switching cables and see if the problem switches to RA. ( I'll be home on Tuesday and I have a spare new DEC cable you can try.)

Bad DEC motor encoder
? ?Try switching motors
? ?(I have a spare new HiTorque motor you can try)

Bad Gemini input socket. (Brendan Smith mentioned this affecting some G2 he has repaired.)? There have been reports of a week solder connection at the G2 board to DIN socket.? You might look for such a thing....maybe a crack in the soldering or crack in the socket itself.? Your system is from March 2021 so you'd ask the factory for a new G-2 replacement.??

Best of luck tracing the problem.

Michael



On Sun, Jul 18, 2021, 5:06 AM alan137 <acfang137@...> wrote:
OK, it happened again.? This time, that PHD2 checkbox was clicked.
All I did was GOTO (under stellarium) a nearby star to center in the field of view for focusing.
Then the mount started running away with no STOP button.
I ran over and shut off the mount.
Then warm restart.
Reconnect under Stellarium.
The mount knew where it's new position was, so therefore I don't blame an uncontrolled motor.
Manually slew back to original position.
Plate solve.? Yup, the reported position was correct.? However, the DEC axis didn't move, only the RA, during the runaway.

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