I sure hope you meant AAA batteries :-)TI calculators have an annoying habit of losing screen contrast when batteries are changed. Turn the calculator on. Press and release the 2ND key. Press and hold the Up-arrow key for five seconds or so and see if the screen becomes legible.
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I sure hope you meant AAA batteries :-)
TI calculators have an annoying habit of losing screen contrast when batteries are changed. Turn the calculator on. Press and release the 2ND key. Press and hold the Up-arrow key for five seconds or so and see if the screen becomes legible.