Question about Texas Instruments TI-85 Calculator
When you change your batteries the contrast is automatically set back to zero. You have to readjust your contrast by pressing 2nd up or down (they look like triangles).
Posted on Jan 08, 2009
Make sure batteries are entered in the right way.
make sure the ions are not eroded.
moving the batteries around sometimes make its work
Posted on Dec 23, 2008
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