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Casio fx991ES PLUS autoreset

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#1 aedrius



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Posted 22 December 2016 - 08:48 PM



it happened to me twice already. When i turn my Casio fx991ES PLUS  on, it is reset, i have not done that! I have to set everything again, complex numbers, LineIO, memory is deleted. If that happens once a week, I can live with that, but my experience with electronics is, things can get worse, like every day or even during work.


Is it something with batteries? I noticed it happend both times after I moved from place to place. Lower temperatures? Pushing of something on the spot, where batteries are? It is 1,5 years old.


What can be wrong?



#2 frankmar98


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Posted 27 December 2016 - 11:57 AM

This calculator has the settings stored in RAM memory, so if the battery has run down, if you move the calculator to a place without light, the settings will be deleted.


I recommend you to change the battery, it is cheap,

if this don't work, you may want to buy a new calculator

#3 user202729


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Posted 28 December 2016 - 11:28 AM

Your calculator being fake is also a possible reason. Also if the battery is low you must have noticed that (low contrast, slow processing, etc.)

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