TI-83plus was working with this calculator yesterday. Today it wont turn on. Put in a new set of batteries and still nothing. I am in the middle of a college class and ready for exam and I need to get this working.

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Greg Cann

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Firstly check the battery compartment for any sign that the old batteries have leaked. Look for signs of corrosion, white powdery deposits on any of the contacts? You can clean the contacts with a little alcohol or a light abrasive. Also check they are in the correct way round!! Next you can reset the calculator as described on page 740 of the manual which you can download below: http://education.ti.com/guidebooks/graphing/83p/83m$book-eng.pdf The full reset of the calculator is as per this diagram:

Posted on Aug 05, 2007

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