Re: Scary problem with AP-900 Goto & Laptop

Don Anderson

Sorry Marj disregard my last reply. I had the laptop power supply connected to the same three plug extension cord as the mount power supply. This was then plugged into the house. The laptop of course has its own batteries which effectively isolates the computer from direct connection to outside power no matter what it is. The only other connection to the outside world was via the USB to the mount. Coincidence?? Hopefully.

From: Marj <marj@...>
To: ap-gto@...
Sent: Sat, November 14, 2009 2:33:31 PM
Subject: RE: [ap-gto] Scary problem with AP-900 Goto & Laptop

Hi Don,
There is ABSOLUTELY no way that the keypad or control box had anything
to do with the laptop crash. It is just a weird coincidence. Did you use
the same power supply in both cases?

Clear Skies!

Marj Christen
Vice President
Astro-Physics, Inc
11250 Forest Hills Road
Machesney Park, IL 61115
Phone: 815-282-1513
Fax: 815-282-9847
www.astro-physics. com
Please include this e-mail with your response.

____________ _________ _________ __

From: ap-gto@yahoogroups. com [mailto:ap-gto@yahoogroups. com] On Behalf
Of jockey_ca
Sent: Friday, November 13, 2009 11:03 PM
To: ap-gto@yahoogroups. com
Subject: [ap-gto] Scary problem with AP-900 Goto & Laptop

Last night I hauled my mount (May 2008 model) and scope out and set it
up in the back yard. After everything was set up in the normal way, I
turned on the power(Pyramid 5A power supply). On power up the LED on the
CP3 servo controller turned on red as usual however the keypad did not
come on. I turned off the power checked all the connections and cables
(keypad, motor cables power supply etc) then fired it up again. Again
keypad was still dead. I then connected my laptop via two keyspan USB to
serial adapters to the mount and fired up the laptop (Windows XP pro.
The laptop came on with the blue screen of death saying windows was shut
down to protect files on the computer. The were three references to
memory addresses in the last row. I shut everything down hauled
everything inside and set it back up in the basement. After about an
hour, I fired everything back up and the mount and keypad appeared to
work fine. I fired up the lap top. Windows came back up with a message
that the system had recovered from a major problem (not exact wording).
I connected to the mount and brought up the Sky 6 and Pulse guide.
Everything connected and runs ok. I have tried several shut downs and
restarts with no further problems. My laptop (4+ yr old Dell Inspiron
8600) has always been stable.
Has anyone else experienced something like this.
Don Anderson
Clear skies!

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