Question about Texas Instruments TI-89 Calculator

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Screen does not come on when i hit on changed batteries (AAA) no extremities in temperature exposure

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  • kakima Aug 20, 2010

    TI calculators have an annoying habit of dimming the screen when the batteries are changed so that it appears as if the calculator isn't turning on. Turn the calculator on (or at least press the ON key). Press and release the 2ND key. Press and hold the Up-arrow key for a few seconds and see whether the screen becomes legible. Does this do anything? If not, please append a comment and we'll go on to the next step.

  • sufs619 Sep 23, 2010

    Actually no, sorry. I totally forgot about this till I just got an email notification. I've had a lot going on (new apartment, going back to grad school, family wedding) so I never ended up coming back to post that your solution did not help. If you can offer any other suggestions I'd gladly take them, but I understand that I may have wasted some of your time already.

  • sufs619 Sep 23, 2010

    Sorry no. I had a lot going on recently in life (wedding, moving into a new apt, and getting back to grad school) so I had forgotten to respond to your post, till I just got a notification that you'd said something else. The contrast issue did not help, and I understand if you don't want to help me after I didn't give you feedback for this long, but I'd appreciate any other suggestions.



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Having gone over a month without a response to my query, I assume it was just a contrast problem, which my suggestion solved.

Posted on Sep 23, 2010

  • kakima Sep 23, 2010

    No problem.

    Try this next: turn the calculator on (or at least press the ON key). Now hold down the diamond key and then hold down the key. Does the entire screen darken?

  • sufs619 Sep 23, 2010

    Ah! You're too on the ball with more suggestions! I'll post back here in a week. Right now it's packed away with some of my other stuff that's headed to my new apartment next week when I finish settling in.



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