Question about Office Equipment & Supplies
Calculators are little devices that need to be handled with care. If the calculator did not fall down or compressed between two surfaces (e.g hip pocket) or violate any of the manufacturer's handling instructions, then it may come on if it has a 'reset' aperture. ***** the reset aperture with a tiny pointed object. It should come on. Hope Your problem will be solved.
Posted on Sep 10, 2009
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Posted on Jan 02, 2017
The backup battery's only purpose is to retain the contents of the memory while you change the main batteries.
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.
If this doesn't do it, please reply to this post and we can go on from there.
Posted on Dec 01, 2010
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