Question about Texas Instruments TI-86 Calculator

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Error turning on

When I turned it on it flashed black squares along the screen. When I pulled out the battery's I noticed that the case was slightly ajar. As I rock it back and forth I can hear a rattling. It now will not turn on.

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Re: Error turning on - Texas Instruments TI-86 Calculator Calculators

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Posted on Jun 13, 2008

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My TI-nspire CX CAS just got a white screen with a black stripe.

Unplug the battery? I thought that the battery was built in.

Nov 13, 2014 | Texas Instruments TI-Nspire CX CAS...

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Getting back to the original screen

What make and model calculator?

Apr 28, 2013 | Calculators

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All I get when powered on is a black square that is gridlike. No other controls work. All 5 batteries are new. How do I get it fixed. My location is Reseda California 91335

Try to lighten the screen reolution. Turn the calculator on, press the 2nd key. Then hold the down arrow key. This should lighten the screen. You can darken the screen also. The only difference is hold the up arrow key down until it's dark enough.

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

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How do you change the battery in a Cannon LS-100TS Calculator? The pamphlet states, "do not attempt".... I would think it would be easy.

Undo 3 screws on the back. The rest of the case clips together along the outside edges, wriggle and pull the two halves apart (gently). Battery is easily visible and accessible. LR44, replace with + upwards. When you have reassembled the case you might need to press the reset button (on the back, small black dot, use a pen or similar to push it) before the calculator functions again.

Sep 28, 2010 | Canon LS-100TS Calculator

1 Answer

My Ti-83 will not turn on, even after putting in new batteries. Occasionally some black will appear on the screen along with some symbols but it then shuts off. Any ideas what is wrong?

Try to increase the contrasts by pressing the key (2nd) and the up arrow until you can see the screen.
Tell me if this fixes the problem or not.

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

1 Answer

I've replace battiers in my TI-85 and now when I turn it on there is a black screen. I can turn off. What do I do to clear screen?

After battery replacement, the screen contrast is liable to change: It may be too dark (your current case) or too light. You must adjust the contrast.
  1. Press [2nd] key and release it.
  2. Press an d HOLD one one of the navigation arrows
  • Down arrow to lighten screen (your current case)
  • Up Arrow to darken.
Keep pressing the relevant arrow key until the contrast is adequate.

Jan 25, 2010 | Texas Instruments Calculators

1 Answer

The cursor blinks as a checkered black square and keys don't work

The memory of the calculator is ful,l that is why you cannot enter anything anymore. You must clear the RAM of the calculator.
Press [2nd][MEM][7:Reset][1:All Ram][2:Reset][ENTER]. Press CLEAR to clear the Ram Cleared Message.
If that does not work, pull the main batteries out of calculator and leave them out for a while (a few hours). Then reinsert them.

Hope it helps.
Thank you for using FixYa and rating the solution.

Dec 01, 2009 | Texas Instruments TI-83 Plus Calculator

4 Answers

Screen fully black

Black-Screen/Black-Pixel Fix for TI-Calculator

This will erase all memory and reset defaults.

1. Remove 1 AAA Battery
2. Press and Hold 'ON' for 30 seconds
3. Replace AAA Battery
4. Adjust Contrast to appropriate level

If this fails, try again with ALL Batteries removed including
the backup Lithium Battery.

If all else fails, try the following reset procedure:

1. Remove ALL Batteries (inc. Backup)
2. Let Calculator sit with no batteries for 2~4 hours.
3. Hold 'ON' for 30 seconds.
4. Replace all the batteries (May be good idea to use new batteries
just in case old ones were dead)
5. Turn on Calculator
6. Change Contrast to appropriate level

- Remember to use correct batteries or calculator may not work. The
correct batteries are Alkaline, Rechargable Batteries are TOO WEAK,
Heavy Duty batteries are TOO STRONG.

Oct 09, 2008 | Texas Instruments TI-89 Calculator

4 Answers

Dark screen?

press 2nd, hold the down key until the screen lightens up.

May 07, 2008 | Texas Instruments TI-85 Calculator

1 Answer

Small black square in top left...won't turn off

You should replace the AAA batteries with new ones, and should by a new set of back up batteries.

Aug 23, 2007 | Texas Instruments TI-83 Plus Calculator

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