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Re: Ultra 60 NVRAM
Tobias Ulmer writes:
[...]
> Since you have working, empty timer, take a knife and carefully dig
> out the epoxy in the pocket where the battery is connected. I believe
> it's the pocket on the "Vss" (ground) pin side, opposite of the pin 1
> marking.
>
> Cut the two leads to the dead battery, solder on a new battery holder and
> put in any 3V lithium cell you like (I'd recommend something popular
> like CR2032). Polarity is easy to check, the negative side of the
> battery is connected directly to the Vss pin. Have a look into the datasheet.
>
> And of course it's on youtube...:
> https://www.youtube.com/watch?v=wwFM2RuAGno
> https://www.youtube.com/watch?v=VV2GHgwrbGU
And (in German, but lots of good pictures):
https://www.sonnenblen.de/index.php/topic,6866.0.html
They use the older MK48T02 but it is the same general procedure.
Regards -- Volker
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