Question about Texas Instruments TI-89 Calculator

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My TI-89 will not turn on or respond in any way. The last time I used the calc was 4 months ago. I tried to turn it on a few days ago but it would not work so I changed the batteries. That didn't work and neither have any of the solutions mentioned online. What can I do?

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Take out one battery. While holding the "On" button, put the battery back in. I can honestly not explain what happened, but it has happened to me multiple times as well. You might have to do this more than once, but within a few attempts, it should start working again. Tell me how it works out, and hope this helps!

Posted on Oct 12, 2010

  • wimberleytex Oct 17, 2010

    This still didn't work. Do you know of any other solutions? Since I bought the calculator in February, do you know if Tx Instruments will replace it?

  • Isaac Vogler Oct 17, 2010

    I cannot tell you for sure, but if so long as you didn't do anything outrageous with it (dunking it in water or throwing it against a wall), and you have the paperwork that came with it, you have a very good chance of getting a replacement. Sorry that I can't be of more help.

    OH! I didn't think of this one. Turn it on, then try to lower the contrast as much as possible. What might be happening is that it does turn on, but you can't tell, because the screen is too light.

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Hello,
Try to increase the contrast
1. Turn it on
2. press [2nd] and release button
3. Press [UpArrow] and release button
4. Repeat steps 2 and 3 until contrast is adequate.

If that does not work use the link below to install TIConnect software
http://education.ti.com/educationportal/sites/US/productDetail/us_ti_connect.html
Install it on your computer and run it to oppen the main Window. Then connect you calculator to a USB port and, in the TIConnect main window Click the TIConnect TIDeviceInfo. It will try retrieve the info.
If it does your calculator is fine.

If it tells you Device Not found , Click communication settings in same pop up window where it said Not found, and Select Device, Select Cable, Select Port and try OK..

If all that does not work, then it may be time look for a repair shop.

If you are lucky and it works, you should reinstall the OS, which can be downloaded from education.ti.com. You drag and drop the OS on the TIconnect main window. Calculator must of couse be connected to computer.
Hope it helps

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Darken screen!!!


reset your calc, press 2nd left right on simultaneously. it should work.

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Ti-89 Doesn't Turn OFF!!


1) Update the OS from the TI site.
2) check if button is sticking(not necessarily just the plastic button, but what it hits on the inside... you can clean the contacts on the inside of the calc with a Q-tip and rubbing alcohol.)

I don't have much experience with this specific calculator but those are my best bets.

good luck
-Saik0Shinigami

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