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Question about Texas Instruments TI-83 Plus Calculator

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Weird lines, characters, symbols etc.

My calculator turns on, but anything I type in comes up as weird lines, characters, and symbols. Nothing is legible. The screen does not say "Batteries are low." I have replaced the AAA batteries just in case; I tried them in other devices and they worked in them but I still get the mess on the calculator screen. Do I need to change the lithium battery? I've had this for a number of years and never changed that. Or is it software issue?

Posted by Bball655 on

  • zimmer_steve Oct 02, 2008

    Changed AAA batteries, and now screen displays random mess of symbols



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Anonymous

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  • 35 Answers

It sounds like you need to put in a new set of back-up batteries. They can be found behind where the AA batteries are.

Posted on Aug 27, 2007

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