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Skymap IIIC internal battery replacement

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billp(at)wwpc.com
Guest

Posted: Sun Mar 25, 2007 4:56 pm Post subject: Skymap IIIC internal battery replacement

Does anyone have the instructions for replacing the internal data backup 

battery in a Skymap IIIC? My battery died on a trip back from Reno today 

and all the user way points and flight plans are gone. Guess I'll have 

to fly to all those places again to rebuild the way points. 



- Bill

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peter.rees01(at)tiscali.c
Guest

Posted: Sun Mar 25, 2007 11:54 pm Post subject: Skymap IIIC internal battery replacement

Hi Bill



I did ours a few years ago (if the 3C you have is the one in an 

avionics tray, not the slim one). didn' t have any instreuctions just 

took the lid off and I think the top PCB (there are about 4 boards in 

there) - unsoldered the old battery and fitted the new one - only took 

about an hour. If you're not good at soldering, I'd find someone who is 

- the PCB tracks will lift etc if you overheat them.



happy landings



Peter



___________________________________________________________



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billp(at)wwpc.com
Guest

Posted: Tue Mar 27, 2007 11:01 pm Post subject: Skymap IIIC internal battery replacement

Peter,



Thanks, I did get it apart to confirm the battery configuration. I found 

  a place here in California that has the same battery configuration 

with the same chemistry as the one Skyforce used. It's about $3.25 plus 

Shipping. You have to request they weld on solderable tabs but that only 

costs and $0.25. I've been soldering for about 50 years but every once 

in a while I do lift a trace. I hate those 50W wire wound resisters 

soldered into a .020" trace. Easy to put in and hard to get out.



http://www.batteryspace.com/index.asp?PageAction=VIEWPROD&ProdID=1617



- Bill



  peter.rees01(at)tiscali.co.uk wrote:

 	  Quote: 	
		   

 

 Hi Bill

 

 I did ours a few years ago (if the 3C you have is the one in an 

 avionics tray, not the slim one). didn' t have any instreuctions just 

 took the lid off and I think the top PCB (there are about 4 boards in 

 there) - unsoldered the old battery and fitted the new one - only took 

 about an hour. If you're not good at soldering, I'd find someone who is 

 - the PCB tracks will lift etc if you overheat them.

 

 happy landings

 

 Peter

 

 

 

 

 

 ___________________________________________________________

 

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Float Flyr

Joined: 19 Jul 2006
Posts: 2704
Location: Campbellton, Newfoundland

Posted: Wed Mar 28, 2007 8:09 am Post subject: Skymap IIIC internal battery replacement

That’s why they make side cuts and chain saws   Seriously... that's one

spot where it's easy to lift a trace.



Noel



[quote] --

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_________________
Noel Loveys
Kitfox III-A
Aerocet 1100 Floats

billp(at)wwpc.com
Guest

Posted: Fri Mar 30, 2007 6:36 am Post subject: Skymap IIIC internal battery replacement

Turns out lifting a trace is less of a problem than it could have been. 

The new battery came with solderable tabs with holes in them. I just 

clipped the leads off the old battery and used the old leads to connect 

the new battery. So I was soldering to the leads and not the circuit board.



- Bill



Noel Loveys wrote:

[quote] 

 

 That’s why they make side cuts and chain saws   Seriously... that's one

 spot where it's easy to lift a trace.

 

 Noel

 

 

 

> --

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