Sperry UTS 40 on Ebay - Statesboro, Georgia
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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