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Posted on Jan 02, 2017
SOURCE: my ti-83 plus has OS problem
the buttons are *hold clear and take the battery out then put it in dont release clear until you turn on the device* OR * the same with the DEL button
Posted on Nov 21, 2007
First of all, and I mean no offense here, check that the batteries are inserted correctly, respecting the polarity +-+-. The flat part (bottom) of the battery is the one that sits on the protruding helix-like electrical terminal. Inside calculator, there is polarity diagram.
When you change batteries, the display contrast may become too dim (too light) for the user to see anything. In that case, it can be adjusted.
Adjusting the screen contrast. Here is how to do it.
There is a key labeled 2nd. It is blue on the TI84Plus, and yellow/orange on the TI83Plus.
Posted on Dec 11, 2009
SOURCE: My TI 83 Plus won't work
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 10, 2010
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