Question about Texas Instruments TI-85 Calculator
I wase gone for one week and when I returned, my TI85 calculator would not work. I replaced all batteries, bur it still will not turn on.
TI calculators have an annoying habit of dimming the screen when the batteries are changed so that it appears as if the calculator isn't turning on. Turn the calculator on (or at least press the ON key). Press and release the 2ND key. Press and hold the Up-arrow key for a few seconds and see whether the screen becomes legible.
Posted on Mar 09, 2010
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Posted on Jan 02, 2017
Tips for a great answer:
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Remove all of the batteries including the round lithium battery for 5 minutes. After the 5 minute
period, reinsert all of the batteries and turn the calculator on. Adjust the contrast if necessary.
Just keep trying. Sometimes they can be a pain.
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