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I have a Ti-89 and my screen is really dark all of a sudden. I cant figure out how to lighten it! I can read it, but only if i turn it just right and look at it up close. How can i lighten it?

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Lighten the screen by holding down the green diamond key and then holding down the - key. If you go too far, use the + key instead of the - to darken the screen.

Posted on Sep 17, 2010

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The screen on my TI-89 Titanium turned blue after replacing batteries? How do I fix this? It turns on and off but does not respond to any other buttons.


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Hey shrestha,

I've never seen a calculator with display clarity problems.

The only option I could think to offer you is to attempt to adjust the contrast. However, I'm not sure whether or not your TI-89 actually has an option to change the contrast. Because I own a TI-89 Titanium - and although its a wonderful calculator - it does not allow the user to alter the darkness/brightness of the display.

Call Texas Instruments: 1-800-TI- CARES...They are pretty helpful with common questions like this.

Sayonara,



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I have a TI 89 but when I turn it on the screen is totaly black after waiting like 10minutes or so it started to brighten.


Try adjusting the screen contrast. Turn the calculator on. Press and hold the diamond key, then press + to darken or - to lighten the screen.

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The screen is kind of dark canmt really see what i'm doing


Press diamond then - to lighten the screen. You may have to do this multiple times, and if you go too far use diamond + to darken the screen.

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