Sperry UTS 40 on Ebay - Statesboro, Georgia

jim stephens jwsmail at jwsss.com
Sun Jul 30 15:26:44 CDT 2017

On 7/30/2017 4:43 AM, Dominique Carlier via cctalk wrote:
> Can you tell me where the batteries are supposed to be, on which board?
> I disassembled the machine, extracted the 4 motherboards, I did not 
> see any batteries anywhere.
> If they are externalized, maybe I removed them a long time ago in the 
> idea of replacing them, but I have not yet found where they were 
> connected in that case.
I don't know there are batteries, but the device had a lot of 
configurations which were retained by some means.  1999 was a bit early 
for eeproms that didn't have battery backup of some sort.

If there are no batteries visible, or large super caps which can back up 
memory content, that is a good thing.

There may also be Dallas modules in the thing or similar which integrate 
batteries.  The components will usually have had a 5 to 10 year 
lifespan, and probably won't work so well across power cycles.

> On 28/07/2017 11:25, jim stephens via cctalk wrote:
>> I do hope you get it going.  If you feel qualified, one thing I'd 
>> also look for are packs with batteries to hold information that may 
>> have decayed.  That sometimes can cause what you described.  since 
>> the system may have been left since 1999, the batteries may have gone 
>> onto corrosion and you may have a bit of fixing to do for that.

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