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Problem with financial calculator

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HP 10bii+

Hi,my HP 10BII+ CALCULATOR isn't showing the numbers fully and is showing the word per on the right hand side. Non of the other things are showing. How 1570630647194-1704829332.jpg

Do I solve this?

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1) Reset the calculator, from ...

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2) Too, you can extract the two (2) batteries and maintened by 24hours for discharge capacitor.

3) After, install batteries CR-2032/DL-2032 or CN-2032 lithium ion and try again.

Kind Regards !.
Have a nice day !.
@Maké (Technical Advisor Premium - HP Program Top Contributor).
Provost in HP Spanish Public Forum ...
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