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Celestron AVX RTC battery Replacement Pictures,, How to do!

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29 replies to this topic

#1 JoseBorrero

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Posted 28 September 2015 - 11:03 AM

Really Straight pictures. I guess you must know you need to unplug the mount from power supply, Dec Cable and Hand Controller.

 

Screws are numbered.

 

Enjoy  the pics and hope is informative to you.

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Edited by JoseBorrero, 28 September 2015 - 11:05 AM.

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#2 JoseBorrero

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Posted 28 September 2015 - 11:03 AM

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#3 JoseBorrero

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Posted 28 September 2015 - 11:04 AM

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#4 JoseBorrero

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Posted 28 September 2015 - 11:04 AM

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#5 junomike

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Posted 28 September 2015 - 04:34 PM

Seems simple enough.  I have yet to have this issue with my mounts.

 

Mike



#6 Rick Evans

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Posted 02 October 2015 - 08:14 AM

Thanks. Good to know info.



#7 Phil Cowell

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Posted 03 October 2015 - 03:29 AM

This one is worth a sticky with the mounts popularity.


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#8 bilgebay

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Posted 04 October 2015 - 10:01 AM

Thanks.... 

 

Isn't it too early for an AVX to need this battery replacement ? Mine is maybe more than 3 years old and battery is still good.



#9 JoseBorrero

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Posted 04 October 2015 - 10:04 AM

If your RTC isn't working then there is your fix. Even my Losmandy G11 recommend to change it every 6 months but that change from mount to mount I guess. 


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#10 seawolfe

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Posted 08 October 2015 - 07:03 AM

Thanks.... 

 

Isn't it too early for an AVX to need this battery replacement ? Mine is maybe more than 3 years old and battery is still good.

No, I've had mine for nearly 2 1/2 years and had to have changed the battery once.  Also disassembled that same area to repair the power connector.  On that job, I not only re-soldered the wires to the connector but did an "upgrade" to keep the connector from spinning inside the housing which is what caused the failure in the first place.  I used a thick piece of hard rubber which was cemented around the connector in a "U" shape to keep it in one position.  Haven't had to open the assembly since.



#11 photonhunter

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Posted 26 February 2016 - 10:54 PM

This was very helpful -- my brand new AVX had a non-working RTC -- I turned RTC on and it would always come up Jan 2000 at 18:00:00

 

I took the battery out and checked it and it was good at 3V, so I reseated it, put everything back together and the RTC worked.

 

SO the battery was just not making good contact even though it was seated correctly.



#12 Jeff Morgan

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Posted 27 February 2016 - 12:55 AM

Thanks for the post!

 

Mine never has kept good time, from one new moon session to the next it has usually off by a couple of hours.

 

It has not been a big deal to enter the correct time, but this will be an easy project for the next full moon period.



#13 JoseBorrero

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Posted 27 February 2016 - 06:10 AM

I'm  glad this post is working! :waytogo:



#14 Vince Tramazzo

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Posted 27 February 2016 - 11:53 PM

Question.  When the mount is hooked up to an external power source, is the RTC running off it's small internal battery or external power?

 

I didn't see any info on the RTC battery in the user's manual.

 

Vince



#15 photonhunter

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Posted 28 February 2016 - 12:25 AM

My first guess is that it is running off the battery -- my reason for thinking that is when my battery was not making contact, with the RTC on, it would come up with Jan 2000 at 18:00:00 when the mount was powered up and the time would not tick up.   That was the first thing I noticed when I reseated the battery and powered it up the first time after getting the good battery connection was that the time displayed was Jan 2000 at 18:01:02 and the seconds were ticking up (e.g. about a minute had elapsed after I had applied power to the mount)

 

But this is just a guess on my part.



#16 MIKE64646

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Posted 18 November 2018 - 10:16 AM

i just changed my battery after reading this post. Now my AVX does not  to have the time and date reset every time i turn it on! Thanks! It also gave me the opportunity to tighten up the nut on the power plug in.



#17 JoseBorrero

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Posted 18 November 2018 - 10:36 AM

:waytogo:



#18 Ron in Michigan

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Posted 14 February 2020 - 10:02 PM

Glad I looked this up. I thought hte battery was in teh hand control.  I hate entering in time and date every time I boot it.  I'll give it a try thanks


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#19 JoseBorrero

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Posted 15 February 2020 - 09:47 AM

Glad I looked this up. I thought hte battery was in teh hand control. I hate entering in time and date every time I boot it. I'll give it a try thanks

:waytogo:

Sent from my SM-G960U using Tapatalk

#20 aa6ww

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Posted 16 February 2020 - 01:30 AM

Does this even mater if you have a GPS unit since it takes over the time and location by using the satellite information? 

 

...Ralph


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#21 SeaBee1

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Posted 16 February 2020 - 10:13 AM

Morning Ralph... I hate manual entry on the hand controller... so I use the GPS unit, it's a no brainer, just wait for the link up and Bob's your uncle!

 

Good hunting!

 

CB



#22 aa6ww

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Posted 16 February 2020 - 11:52 AM

Is there a keyboard warning when the battery is bad, or how are you aware that the battery is bad?

 

...Ralph



#23 SkipW

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Posted 16 February 2020 - 12:54 PM

Morning Ralph... I hate manual entry on the hand controller... so I use the GPS unit, it's a no brainer, just wait for the link up and Bob's your uncle!

 

Good hunting!

 

CB

If the RTC is working, set, and you're using it, there's no wait at all.

 

Is there a keyboard warning when the battery is bad, or how are you aware that the battery is bad?

 

...Ralph

You'll know it's not working when the RTC is suddenly way off when starting up after the mount has been turned off. It was obvious when it happened to me after the battery died.


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#24 SeaBee1

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Posted 17 February 2020 - 11:18 AM

If the RTC is working, set, and you're using it, there's no wait at all.

 

You'll know it's not working when the RTC is suddenly way off when starting up after the mount has been turned off. It was obvious when it happened to me after the battery died.

 

All true Skip, I just prefer the GPS to do the data entry. I found the hand controller to be clunky, and as I now see, the RTC was likely not working for me anyway, as I was always needing to enter the info for every session. The GPS also has the added benefit of auto entry if I take the scope to a remote site. With GPS, the mount always knows where it is at.

 

But to your point... if the RTC is working properly, the GPS is a bit of a "luxury"...

 

Good hunting!

 

CB



#25 BigKahuna

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Posted 11 May 2020 - 08:33 PM

I purchased my AVX used last year. It was 7 years old and the RTC stopped updating a few weeks ago. This was an easy fix and I appreciate this detailed write up. This did not effect Firmware. 


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