Question about Texas Instruments TI-89 Calculator
My TI-89 titanium does not turn on any more. what could be the issue?
Just wanted to add my 89 would not turn on anymore so after checking that the batteries were still good I took out the (6) screws and opened the case. The contacts where the battery terminals touched the board were a little corroded. I cleaned them with a abrasive pad and put it back together. It works now.
I had a battery leak a couple years back seems to have accelerated the corrosion a bit.
Posted on Nov 14, 2011
I had the same problem. I installed new sets of four AAA Energizer batteries but Ti89 didn't turn on. I tried replacing the backup battery "303" which costs $4 BTW. But it didn't do anything and a waste of money. Finally I checked the AAA batteries one by one on my Multimeter and found that one of the AAA batteries had a reversed polarity for some weird reason. I guess in must have been made that way in Energizer factory or something. So I throw that one out and replaced it. NOW IT WORKS!
FYI: I checked to see if Ti89 would work without the backup battery and it totally works! So don't bother replacing those unless you have some data stored in memory you don't want to lose.
Posted on Nov 04, 2011
Have tried replacing its batteries!
Posted on Nov 04, 2007
Tips for a great answer:
Jun 01, 2017 | Texas Instruments TI-89 Calculator
Sep 01, 2012 | Texas Instruments TI-89 Calculator
Apr 17, 2012 | Texas Instruments TI-89 Calculator
May 27, 2011 | Texas Instruments TI-89 Calculator
Warning!!! If you do this procedure make sure that your computer and, calculator are connect. Use Ti Connect software and, make sure you can install the OS on the calculator without any interruption. At any time even at the very beginning of this process, if your computer or, calculator gets interrupted or you have a power failure during the installation of the OS, your calculator will be destroyed. So not attempt this procedure during a thunder storm.
You can use the Ti OS Downloader but, you will have no idea what OS is stored by the Ti OS Downloader. So, I suggest following my instructions and, installing the newest Ti 89 Titanium OS 3.10v.
Procedure to installing the newest Ti 89 Titanium OS 3.10v.
You can also get the latest copy of Ti 89 Titanium OS 3.10v by going to the Texas Instruments web site. You can get to that site instantly by clicking, "Ti 89 Titanium OS 3.10v." Once your at the Ti site click the Download Item, Ti 89 Titanium OS 3.10v. Next you can login or, click "continue as guest". I'd would click the "continue as guest". Once you have click, "continue as guest" the Ti 89 Titanium OS 3.10v. will download to you. Click, "SAVE". And then a folder will pop up. It is probably a folder that you download too. If so, you may want to change it and, "Save as" to this folder, "My Documents \ My TI Data \ Downloads". You can also go back and, download the Ti 89 Titanium guidebook too, if needed.
Link your computer and calculator with the USB cable or, Direct Black Link cable that came with the calculator.
Remove one of the AAA batteries. Press and hold the [APPS] key, and while holding the [APPS] key, replace the battery and turn the unit on. On the older TI-89 you should see "Press I to install code...", and you should press the  key to continue. But, on your Ti 89 titanium it should say, "Waiting to receive..." or, "Waiting to received OS...". Now you need to follow the instructions in the paragraph below to restore the calculator's operating system.
Next, drag the Ti 89 Titanium OS 3.10v. that you copied earlier to "My Documents \ My TI Data \ Downloads" out of that folder and, drop it in the "Ti Connect" icon on the desktop. Next the OS Downloader Warning will pop-up. Click, "OK" to continue and, the new OS will begin to install. The Ti Device window should pop up and, click on to the port where your Ti 89 Titanium is located, USB1 cable or Direct Black COM1. Just click, "Select" and, the OS will continue to download. Upon completion the newest Ti 89 Titanium OS 3.01v. will be installed.
Jan 10, 2011 | Texas Instruments TI-89 Calculator
Sep 23, 2009 | Texas Instruments TI-89 Calculator
Sep 22, 2009 | Texas Instruments TI-89 Calculator
Sep 03, 2008 | Texas Instruments TI-89 Calculator
Mar 06, 2008 | Texas Instruments TI-89 Calculator
823 people viewed this question
Usually answered in minutes!