Question about Texas Instruments TI-89 Calculator

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TI89 Calculator will not turn on. It is approximately 5 years old. I have installed new batteries but still will not turn on.

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I had mine for 15 years. Are the batteries in correct? Might be broke

Posted on Aug 26, 2009

  • Richard Klein
    Richard Klein Sep 03, 2009

    If you connect to the computer using ti connect software it might turn on.

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My ti89 calc is not working since a year what is the problem? how can i solve in india?


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 hold the 2ND key. Tap the Up-arrow key several times and see whether the screen becomes legible.
If that doesn't do it, please respond to this thread and we'll go on from there.

Jan 24, 2012 | Texas Instruments TI-89 Calculator

1 Answer

I have the Ti-89 titanium calculator and will not turn on after I changed the batteries. I pushed the green button with the star and held down +. I also tried taking out the backup battery. What should I...


Hi 1945779,

Pressing the green button and, the plus sign is to raise the contrast. Keep doing that process because, if the calculator comes on and, the contrast is to low you'll never know the calculator was ever on. You should also make sure the ports are clean and nothing inside them causing the calculator to short out.


Your only suppose the have all the batteries out for 5 minute but, I had a Ti 85 that I had the batteries out for 20 minutes and, it came on. Leave them out for 5 minutes at the start of this process.


Make sure the batteries are in correctly? The batteries alternate negative/positive, positive/ negative and so on. The first time I put the batteries in, I didn't have them in correctly. I know if it happen to me that anybody could make the same mistake. The small battery should have a plus sign facing up when it is installed properly. And of course, the calculator will never come on if the batteries aren't in correctly.



oneplusgh_51.jpg



Setting up the computer and, calculator for new OS installation.

  • Make sure TI Connect software is installed on the PC.
  • Connect the TI Connectivity cable to the Ti89 titanium and the computer.
  • Do not start the TI Connect software, just have it ready and, on the desktop.
  • Download the Ti89 Titanium v3.10 OS to the PC's desktop.

Reset the RAM first. If the calculator still won't turn on goto the next paragraph and, set of instructions. On the Ti89 family, press and hold the [2nd] [Left Arrow] and [Right Arrow] keys. then press and release the [ON] key. This should reinitialize the operating system, in which you should see a progress bar or, "Installation in Progress" displayed on the screen.



Hold down the APPS key and, take one AAA battery out of the calculator. Put the one AAA battery back in while still holding down the APPS key. Release the [APPS] key and, be ready to install the new OS v3.10, ASAP!!! The (older Ti89) may need to press [ALPHA] [9] or, just [9] when the calculator display's, "Press to install..." and, then they need to install the new OS, ASAP!!! You have to do this process in the right sequence because, the calculator will be destroyed if you do not.


You can either drag and, drop the new OS into the TI Connect icon (pictured below), on the desktop.


oneplusgh_52.jpg



Or click, Start and open Programs, then open TI Tools, then open TI Connect, then open TI OSDownloader. Then just follow the instructions the software gives you. The best way is to drag and, drop the OS into the TI Connect icon because, you know your installing the latest OS. TI OSDownloader might not give you the latest OS version.


If this procedure doesn't work and, is still under "Warranty", I'd see if I could get a replacement from Texas Instruments. Even if out of "Warranty", I'd would still seek replacement with Texas Instruments.


If you have any question just post a comment and, I'll respond quickly.

Jan 21, 2011 | Texas Instruments TI-89 Calculator

1 Answer

Ti 85 wont turn on, batts good, tried to adj contrast , still nothing


Are you sure the batteries are in correctly? They alternate negative/positive, positive/ negative and so on. The first time I put the batteries in, I didn't have them in correctly. You tried adjusting the contrast. Just try adjusting upwards. Sometimes it takes a little for The Ti 85 to come on or adjust right. The Ti85 is an old calculator and, may not work any more. I had my Ti89 for almost 20 years so, they are pretty reliable. If nothing has worked take out all the batteries including the small one in the back. Texas Instruments say's " leave them out for 5 to 10 minutes." I had to leave mine out for over a 1/2 day to get it to work.

Here is the battery reset procedure for the Ti 85.

Try a new set of AAA batteries.
  1. Adjust the contrast by pressing and releasing the [2nd] key followed by pressing and releasing
    the up arrow; repeat as necessary. To adjust or lighten the display, use the down arrow.
  2. Remove one of the AAA batteries. Press and hold the [ON] key for 20 seconds. Reinsert the
    AAA battery and then turn the calculator on.
  3. Remove all of the batteries including the round lithium battery for 5 minutes. After the 5 minute

  4. period, reinsert all of the batteries and turn the calculator on. Adjust the contrast if necessary.

Just keep trying. Sometimes they can be a pain.

Dec 28, 2010 | Texas Instruments TI-85 Calculator

1 Answer

My ti89 won't turn on and i already replaced the batteries


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.

May 20, 2010 | Texas Instruments TI-89 Calculator

2 Answers

I received this solution, but at the end the calculator asked me about some invalid certificate. Now the ti 89 is stuck at the boot screen because if I retry, it goes thru the whole process again and asks...


Hello,
The answer I gave you was taken verbatim from the TI FAQ and knowledge base. I copied and pasted the part relevant to you calculator.
In any case, I sent an e-mail message to ti-cares@ti.com, giving the link to your original question and my answer to it. I took the liberty to copy/paste your present message. I also asked about that invalid certificate.
All we can do know is wait for their reply.

k24674.

Oct 31, 2009 | Texas Instruments TI-89 Calculator

1 Answer

How can I revive my TI89 after two years of not using it?


It could be that you need to replace the backup battery located behind a little door with a screw in the battery compartment. If this doesn't work, try resetting your calculator by leaving backup and AAA batteries out for about 8 hours and reassembling it. Hopefulyy this will work. Good luck

Jul 29, 2009 | Texas Instruments TI-89 Calculator

3 Answers

My ti89 titanium doesn't turn on


I had the same problem. I changed the batteries and it didn't work. I took out the batteries for about 30 minutes, and then put them back in, and it turned on.

Aug 21, 2007 | Texas Instruments TI-89 Calculator

2 Answers

Calculator quick working


Mine did the same thing and I was told by Texas Instruments that I can send it in for repair--for $81 since it is more than 1 year old.

Feb 16, 2007 | Texas Instruments TI-89 Calculator

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