Hello all, I recently left my TI-89 titanium sitting on my desk for a few months without using it. When I came back i turned it on and it booted up to the homescreen fine. However, none of the buttons work. I tried removing both the battery and backup battery, I have tried the left,right,shift,on/off reset (which does reset the calculator but I end up with the same problem!!! I only need this thing for another few months and I really dont want to buy a new one. Can anyone help!?
After trying all of the above and fresh AAA cells, I decided to replace the coin cell (CR-1620). I even tried the full factory rest. Still nothing.
I was beginning to think the calculator was defective when I decided to pull out my DVM and actually measure the AAAs. Even though I replaced them only last week, three cells averaged 0.6V and the 4th was actually a reverse voltage of 1.1V How rare is that when an AAA from Duracell was miss-marked and escaped the factory quality checks.
Once again a fresh set of AAA cells, verify voltage, and it seems to be working. All four cells measured in series in the calculator got a reading of +6.38V.
One caution for all battery powered devices, always replace cells only of the same type and with a similar state of charge. A weak cell can actually be reverse charged by the other three, and this is never a good idea to do this.
Press left and right arrow and 2nd keys simultaneosly, hold it and then press ON. Release all keys at the same time and you will reset TI 89 Titanium.
Or, type diamond key simultaneosly with + or -
(plus or minus) key to resolve dark screen.
Poster literally says he tried this already - "I have tried the left,right,shift,on/off reset (which does reset the calculator but I end up with the same problem!!!"
Why recommend the same steps..?
I'm facing this same issue!
- The hard reset method successfully restarts the calculator, but then it's immediately frozen on the home screen again.
- I've remove all batteries (including small backup battery) and let the device sit for 30+ minutes before reinserting
- I've left the device at the Home screen for hours, and it never becomes responsive.
- I've entered "Waiting to receive..." software mode. But it's not detectable by TI Connect software once plugged in via USB.
It obviously _can_ be responsive to buttons, since the hard reset method works to restart the device. But for some reason, the software side of thing completely locks up on the Home page every time!
Does anyone have any useful advice?
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SOURCE: Ti-89 Doesn't Turn OFF!!
1) Update the OS from the TI site.
2) check if button is sticking(not necessarily just the plastic button, but what it hits on the inside... you can clean the contacts on the inside of the calc with a Q-tip and rubbing alcohol.)
I don't have much experience with this specific calculator but those are my best bets.
good luck
-Saik0Shinigami
SOURCE: TI-89 Titanium (hardcore reset)?
Hey guys,
Do this it will reset your calc and get you out of your busy state
2nd - left arrow - right arrow - on
It will reset your calc no matter how frozen it is.
SOURCE: When I turn the switch on, ti-89 titanium does not turn on.
If you connect calculator to computer using Ti connect device explorer you might be able to see what files are on the calculator. I don't know if you downloaded from the web but, 3rd party programs and shells tent to miss up the calculator. This would able you to delete out possible problems which could be re installed later.
SOURCE: My TI-89 Titanium won't turn on!
A hard reset will clear all memory and should give you back control of the calculator.
1. Put the batteries in the calculator.
2. Press and hold left arrow, right arrow, and 2nd keys.
3. Press and release ON.
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 [9] 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.
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