Question about Texas Instruments TI-85 Calculator

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I just replaced my batteries, and when I turned on my calculator... the super blue screen came on and I couldn't read the numbers. how do i dim the screen?

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Hello. what you want to do is reset the display contrast. This process is described on page 3 of the manual. In case you do not have a manual, here is a link to a free download

http://education.ti.com/downloads/guidebooks/graphing/85/85book-eng.pdf

Go to page 3 of getting started, near the bottom. Regards, Joe

Posted on Feb 04, 2010

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1 Answer

My calculator ti-84 plus is having problems. When i turn it on it will turn off quickly by itself. and while its on i try to click on any botton and it doesnt show the number etc


It could be that the main batteries are drained and are no longer able to supply power to the calculator. Replace the AA batteries with a fresh set. After replacing the batteries the display may become too dark or too dim. To set the correct contrast
Press [2nd] key and release it.
Press and maintain pressure on UpArrow to increase contrast (darken screen), OR on DownArrow to decrease it (lighten screen). If you overshoot your intented contrast you can revert the processs.

Aug 22, 2011 | Texas Instruments TI-84 Plus Calculator

1 Answer

I have had my ti 83 plus since fall 2005. recently the calculator has informed me to change the batteries. So i replace the backup battery and the main batteries. now it wont even turn on. Help.


The screen may be too dim to read. Try pressing 2ND->Up arrow key repeatedly while the calculator is turned on and it may darken the screen enough so you can read it.

Feb 14, 2011 | Texas Instruments TI-83 Plus Calculator

1 Answer

My TI-83 plus cannot turn on even i change a new set of battery ?


The screen may be too dim to read. Try pressing 2ND->Up arrow key repeatedly while the calculator is turned on and the screen should start to darken so that you can read it.

Feb 10, 2011 | Texas Instruments TI-83 Plus Calculator

1 Answer

My TI 83 Plus does not turn on. I have replaced the batteries and the backup battery. I have tried all the troubleshooting solutions given but still it does not turn on. What can I do now?


The screen may be too dim to read. Sometimes when the batteries are low, the screen automatically dims itself. The problem is, it doesn't undo that when the batteries are replaced. Try pressing 2ND->Up arrow key repeatedly while the calculator is turned on and the screen should start to darken so that you can read it.

Jan 29, 2011 | Texas Instruments TI-83 Plus Calculator

1 Answer

This is the second calculator I've broken. The first read low battery, then I didn't use it for a few weeks. The next time it wouldn't turn on. First I replaced the AAA batteries. Still didn't work so I...


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 fix it, please reply to this post and we'll go on from there.

Sep 22, 2010 | Texas Instruments TI-83 Plus Calculator

1 Answer

TI 83 plus calculator has dim screen.


TI calculators have an annoying habit of dimming the screen when the batteries are changed. 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.

Jul 19, 2010 | Texas Instruments TI-83 Plus Calculator

1 Answer

Do I lose all info if I change out the batteries?


Not if the backup battery's good---that's what it's there for. You may not be able to read the screen afterward, 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. If this happens, 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.

May 07, 2010 | Texas Instruments TI-83 Plus Calculator

1 Answer

Entire battery replace but still wont 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.

Feb 22, 2010 | Texas Instruments TI-83 Plus Calculator

2 Answers

My ti 83 plus calculator wont go on


Hello,

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.
  1. Press the [2nd] key and release it.
  2. Press the [UpArrow] key (the top of the long vertical key in the Malta Cross like group of keys) and HOLD.
  3. On the top right corner of the screen you will see a number, which tells you the degree of contrast.
  4. Release the [UpArrow] key when contrast is adequate for your viewing.
  5. If you darken the screen too much, lighten it by the same procedure, pressing the [DownArrow].( See #1 and 2 above)
The lack of screen contrast is the most frequent cause of 'malfunction'. Try readjusting contrast, as described above. If that does not solve the problem, post a comment to this thread detailing what you did and the calculator response and we will troubleshoot further.

Good luck.

Dec 11, 2009 | Texas Instruments TI-89 Calculator

1 Answer

Ti-89 won't turn on -replaced AAA batteries -replaced backup battery -pressed left, right, 2nd, on at once no response


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 at all. 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.

Nov 09, 2009 | Texas Instruments TI-89 Calculator

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