Question about Texas Instruments TI-86 Calculator
If batteries are inserted correctly you can adjust the contrast
Press [2nd] key and release it
Press and hold [UPArrow] key to darken till contrast is dark enough.
To enlighten screen, do as above but use the [DownArrow] key.
Hope it helps.
Posted on Sep 23, 2009
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Posted on Jan 02, 2017
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