Question about Texas Instruments TI-86 Calculator
I am having the same trouble....I found this and will try it today. Hope this works...I hate to have to buy another one.
Posted on Aug 08, 2008
Two suggestions. First, and I apologize if this is too obvious but sometimes the obvious gets overlooked, turn it on, then press 2nd and the "up arrow". Many calculators get a quirk that causes the contrast to reset to zero when batteries are removed or memory is reset.
Second...try the coin-cell battery that keeps the memory intact. These last a long time, but they do eventually run out.
Posted on Sep 13, 2008
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Posted on Jan 02, 2017
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