Question about Texas Instruments TI-89 Calculator

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TI 83 Plus Calculator

Hello I am having trouble with my calculator when I turn on the computer the screen is black and is remaining that way and I would like to know how to repair the situation.

Posted by jgorrell on


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You can try to turn the contrast down by pressing 2nd and then hold "down" If the screen does not fix, put new batteries in (including the back up batteries). The problem will be resolved. Hope this helps...

Posted on Aug 27, 2007



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I changed my batteries - including the back up one - it did fix the issue for that time. Next time i used the calculator - the screen is back to black.
Any other suggestions?

Posted on May 10, 2008


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1 Answer

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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.

If the screen remains blank then please respond to this post and we'll go from there.

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If you cannot see anything on the screen, the contrast may need to
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Screen displays small horizontal line when powered on that quickly fades away. Have changed batteries. When I do a reset (take one battery out, push delete while putting it back), the screen displays...

Here is what the Texas Instruments Knowledge Base has to say about your question.

I hope it helps.

Reinstalling the OS fot the TI84Plus

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god bless!

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