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My TI-89 calculator screen is so dark I can barely read it. Is there a brightness function or is something wrong with it?

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  • Anonymous Aug 05, 2008

    the screen is just really dark. i think i pressed a botten or something that changed its appearence. i was fine just a short while ago, i used it on a test earlyer today.

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Press the diamond shaped green key and the minus sign back and forth and the screen will brighten up!

Posted on Feb 18, 2009

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