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JIM262
member
Reged: 11/29/07
Loc: West Nyack, NY
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Celestron CG5-ASGT Problem
#5414913 - 09/11/12 10:35 AM
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I have this mount about three years with no problems. Now I have one. While performing a 2 star align, my mount will not completely stop slewing and does not ask to use the arrow buttons to align the selected star. I checked the power supply and used three different sources - same problem each time. I checked the DEC cable with OHM meter and all six connections ok. I took the mount covers off and all cables look good. Could one of the boards be a problem?
Of course the mount has to act up during the best weather conditions in my area.
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austin.grant
sage
Reged: 10/18/10
Loc: Shreveport, LA
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Re: Celestron CG5-ASGT Problem
[Re: JIM262]
#5414957 - 09/11/12 11:03 AM
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Mine's done that before, and I seem to remember just hitting UNDO and selecting the same star again. The second slew has always worked fine, although it is a weird problem.
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mclewis1
Thread Killer
Reged: 02/25/06
Loc: New Brunswick, Canada
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Re: Celestron CG5-ASGT Problem
[Re: austin.grant]
#5415012 - 09/11/12 11:32 AM
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Jim,
Make sure the power connector is tight (carefully split the center pin a bit often helps). Check the power switch isn't starting to fail (getting warm), try slowly exercising the switch a bit (bunch of on/off movements with the power off).
Reset the HC to factory settings - but make sure you save any of your backlash settings first.
Clean the HC and DEC cable connectors and sockets with some contact cleaner.
Update the firmware in the HC.
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JIM262
member
Reged: 11/29/07
Loc: West Nyack, NY
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Re: Celestron CG5-ASGT Problem
[Re: mclewis1]
#5415025 - 09/11/12 11:36 AM
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Mark,
I did all your recommendations last night and to no avail.
Thanks though for your response.
Jim
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mclewis1
Thread Killer
Reged: 02/25/06
Loc: New Brunswick, Canada
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Re: Celestron CG5-ASGT Problem
[Re: JIM262]
#5415133 - 09/11/12 12:35 PM
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Well then I guess we're looking at ...
- internal cabling
- MC board
- Encoder (if it's moved you may need to have a look at it's spacing - you'll need a very small allen wrench to adjust it. It's a very subtle adjustment (very small spacing). There have been some discussions about adjusting the encoder spacing here and on the ASGT Yahoo Group. Try searching on "encoder runaway slew").
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