Question about Texas Instruments TI-89 Calculator

2 Answers

Screen is half Black

I have the normal Ti-89. When I turn on the calculator, the screen is half black. If I change the contrast, it does not help me see anything anymore. I used to be able to read the calculator by adjusting the contrast to barely make out the numbers on both sides, but now that doesn't even work for me. I guess i should add that the screen is vertically split, and the right side works fine. The calculator is about two years old and has suffered no water damage.

Posted by on

2 Answers

  • Level 1:

    An expert who has achieved level 1.


    An expert that got 5 achievements.


    An expert whose answer got voted for 20 times.


    An expert who has answered 20 questions.

  • Contributor
  • 35 Answers
Re: Screen is half Black - Texas Instruments TI-89 Calculator Calculators

The ribbon cable may be replaceable

Posted on Feb 24, 2009

  • Level 3:

    An expert who has achieved level 3 by getting 1000 points


    An expert that got 10 achievements.


    An expert that got 5 achievements.

    Vice President:

    An expert whose answer got voted for 100 times.

  • Master
  • 752 Answers
Re: Screen is half Black

The ribbon cable that controls the screen is damaged (or the liquid crystal has baked out... tis happens when the unit is exposed to high temps or long periods of direct sunlight). From my experience w/ these calculators they cannot be repaired.

Posted on Sep 11, 2007

Add Your Answer

0 characters

Uploading: 0%


Complete. Click "Add" to insert your video. Add


3 Points

Related Questions:

2 Answers

I cant really read some of the options on the screen on my ti 89....the letters are so blurry......what can i do ?????

Hey shrestha,

I've never seen a calculator with display clarity problems.

The only option I could think to offer you is to attempt to adjust the contrast. However, I'm not sure whether or not your TI-89 actually has an option to change the contrast. Because I own a TI-89 Titanium - and although its a wonderful calculator - it does not allow the user to alter the darkness/brightness of the display.

Call Texas Instruments: 1-800-TI- CARES...They are pretty helpful with common questions like this.


The Math Cheetah

Mar 13, 2011 | Texas Instruments TI-89 Calculator

1 Answer

I have a TI 89 but when I turn it on the screen is totaly black after waiting like 10minutes or so it started to brighten.

Try adjusting the screen contrast. Turn the calculator on. Press and hold the diamond key, then press + to darken or - to lighten the screen.

Jan 12, 2011 | Texas Instruments TI-89 Calculator

1 Answer

I turned on my TI 89 calculator to take an online college test that is due by midnight, and my screen is completely black!..HELP

your contrast might be up to much.
try this:

hit the diamond key and then the minus key. this shoud decrease the contrast. keep reapeating these same steps until your home screen is visible. hitting the diamond key, then the plus key turns up the contrast.

Oct 20, 2010 | Texas Instruments TI-89 Calculator

1 Answer

How do you fix a TI-89 calculator whose screen is half dark?

use a metallic clip to put pressure along the top side of screen81cc2b4.jpg

Nov 11, 2009 | Texas Instruments TI-89 Calculator

1 Answer

Full Black Screen

Maybe the contrast setting is off, try holding diamond (green key) and pressing the + and - keys multiple times.

Mar 30, 2009 | Texas Instruments TI-89 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

1 Answer

Darken screen!!!

reset your calc, press 2nd left right on simultaneously. it should work.

Apr 25, 2008 | Texas Instruments TI-89 Calculator

1 Answer

Half the screen on my TI-89 is black

Hey, i have nearly the same problem and now finally found a solution to it. In my case half of the screen was empty and the other worked correctly AND slight pressure to the frame surrounding the display on the side of the defect half and/or above the display makes the display reappearing again. Because it's annoying if you always have to press with one hand on your calculator while working with it i did the following: Important: Make sure that... ... you have a backup of the data stored on your TI because you could lose them during the following procedure. ... we are really talking about the same problem. ... this hints come without any warranty and you might destroy your calculator completely following this advice. 1. Open your TI 89 as described for example in [1] 2. Take a piece of foam rubber and cut out a stripe with a shape like |_ or "L", about 1cm in width which fits approximately the frame around the display on the the defect side and the top. 3. Place the foam rubber on the silver shield you see after opening the back of your TI. 4. Then you can assemble your calculator again. I hope i could help you! [1]

Sep 05, 2007 | Texas Instruments TI-89 Calculator

2 Answers

TI 83 Plus Calculator

You can try to turn the contrast down by pressing 2nd and then hold "down" If the screen does not fix, put new batteries in (including the back up batteries). The problem will be resolved. Hope this helps...

Aug 18, 2007 | Texas Instruments TI-89 Calculator

Not finding what you are looking for?
Texas Instruments TI-89 Calculator Logo

777 people viewed this question

Ask a Question

Usually answered in minutes!

Top Texas Instruments Calculators Experts


Level 3 Expert

93802 Answers


Level 3 Expert

7983 Answers

Stevan Milanovic

Level 2 Expert

243 Answers

Are you a Texas Instruments Calculator Expert? Answer questions, earn points and help others

Answer questions

Manuals & User Guides