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mtber
super member
Reged: 04/05/06
Posts: 148
Loc: Apex, NC
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I get the same No Response 17 regardless of whether the HC is plugged into the Hand Control, Aux 1, and Aux 2 ports.
Given the voltages erad above on the two motor control boards, does anyone know if they indicate where teh problem may be? I'm pretty sure it is not teh hand controller since it was in a box and not connecetd to the scope. The original issue is that NexRemote would no longer connect and I pulled it out to simplify trouble shooting.
Thanks,
John
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12.5" Discovery Truss Dob
CGE 1100 StarBright XLT
WO ZenithStar 80 FD Anniversary Edition
Stellarvue SV66
Desert Sky Astro DSV-1 Alt/Az mount
Nikon 10x50 Action Extreme ATB
Coronado PST
SkyScout
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DrBuck
sage
Reged: 12/10/08
Posts: 269
Loc: Susanville, No. Calif.
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I just heard from Celestron, and they are replacing both the electronics pier and HC-----hope that works 
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DrBuck
Roll off Roof Observatory,
CGE on concrete and steel pier
Takahashi FS 152 Fluorite apo refractor
Televue 85MM Apochromatic refractor
12 inch LX 200 gps smt uhtc
Nikon D-90 with 18-200mm AF VR lens
Canon 15x50 IS Binoculars
http://www.flickr.com/photos/697650grr/?saved=1
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David Pavlich
Postmaster
Reged: 05/18/05
Posts: 8666
Loc: Mandeville, LA USA 30.22 X 90....
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Quote:
I just heard from Celestron, and they are replacing both the electronics pier and HC-----hope that works
Now that's good news!!
David
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Proud Member; PAS NOLA,
"If we knew what we were doing, it wouldn't be called research..."
A. Einstein
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CounterWeight
Pooh-Bah
Reged: 10/05/08
Posts: 1292
Loc: PDX chronoplast
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John,
Were those the voltages at 'power up' and no buttons pressed?... was only one measurement taken or more than once and averaged? Sorry took a while to notice the post.
[edit] - Also, what were you using as a ground reference for the multimeter?
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 - 
CGE (Frankenmount mod.)
Onyx 80ED, Tak FS-128 #02058, TEC APO160ED #030
CCD: Orion SSPDSCIv2, SSI3, SSAG
diags, ep's, tubes, filters, Binocs
My CN Image Gallery
Experience is a difficult teacher, it gives the test first, and gives the lesson later
Edited by CounterWeight (10/16/09 02:23 PM)
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mtber
super member
Reged: 04/05/06
Posts: 148
Loc: Apex, NC
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If I recall correctly, the voltages were taken after "power up" and the No Response 17 from the HC after it failed to initialize. No buttons pushed.
I used the little screw hole where the polar finder screws in as the ground point. (clean exposed threads).
These were a single measurment.
I went out last night and took the drive assembly off of the electronis pier. Checked out the boards in the pier, nothing obvious.
Tried to repeat the voltages on the motor control boards that I had reported previously, and couldn't reproduce any 5 V readings, nothing but random mV drift.
I'm afraid it's time for me to call Celestron and bite the bullet on shipping it back (out of warranty). THis is beyond my technical capability and patience.
Thanks for your help.
John
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12.5" Discovery Truss Dob
CGE 1100 StarBright XLT
WO ZenithStar 80 FD Anniversary Edition
Stellarvue SV66
Desert Sky Astro DSV-1 Alt/Az mount
Nikon 10x50 Action Extreme ATB
Coronado PST
SkyScout
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mtber
super member
Reged: 04/05/06
Posts: 148
Loc: Apex, NC
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Changed my mind after thinking about how much it will likely cost to ship the RA/Dec assembly and pier from North Carolina to California.
A new motor control board is “only” $158 plus $5 shipping. I’ll bet it would cost close to 2/3rds of that to ship the mount back and forth and have to pay for the board on top of it.
I’m thinking that it is probably the motor control board.
Nexremote – no response
Can’t flash the MC firmware
Hand Control gets No Response 17/16.
That’s two different paths that go through the MC board.
I figure it’s worth the gamble to just replace it and not ship the mount.
The crazy thing is that I have to snail mail a check and Celestron said it would take 15-20 working days to get the board.
John
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12.5" Discovery Truss Dob
CGE 1100 StarBright XLT
WO ZenithStar 80 FD Anniversary Edition
Stellarvue SV66
Desert Sky Astro DSV-1 Alt/Az mount
Nikon 10x50 Action Extreme ATB
Coronado PST
SkyScout
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imhotep
Pooh-Bah
Reged: 02/14/07
Posts: 1429
Loc: Tampa, FL
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If I could piggyback just briefly...I've read and appreciate this thread very much because I am recently interested in the CGE.
DrBuck, did Celestron give you a timeline for the revisions to this mount? I know at one point the CGE was going to be phased out, then Celestron changed their minds, so I and some of my buddies had been wondering if a revision was on the horizon.
If they make the changes inside of six months I will probably wait to buy one.
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Curt
8" F5 Newtonian Astrograph
Orion 80ED CUSTOM
Edmund Optics 4.25" 'Palomar' Newtonian, 1968 vintage
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imhotep
Pooh-Bah
Reged: 02/14/07
Posts: 1429
Loc: Tampa, FL
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Doh, I think I misunderstood. I thought DrBuck was saying that the CGE in general is going see some parts replaced, but it sounds like he's talking about his own CGE. Sorry to add confusion to an otherwise enlightening thread!
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Curt
8" F5 Newtonian Astrograph
Orion 80ED CUSTOM
Edmund Optics 4.25" 'Palomar' Newtonian, 1968 vintage
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