My TI-89 calculator turns on, but gets stuck on window editor

Hi
when you turn on the Calc press the 2nd button and if the busy indicator is on its and hardware problem or if none of the keys is working
let me know if you want to fix

[email protected]

Jack

It is just a matter of being in EXACT mode. To set your calculator in EXACT mode here's the key sequence. Press [MODE] [F3] [Up Arrow] [Up Arrow] [Right Arrow] [2] [ENTER]. Now when your in the Matrix Editor you can input your numbers in decimal form and, they will be automatically be converted to a fractional format. Pictured below is a matrix that was entered using decimal numbers and, was converted into factional form. Notice at the bottom of the screen the calculator is in EXACT mode.


Here's the same matrix in the HOME screen.



Next is the same matrix converted back to decimal numbers. Notice at the bottom of the screen the calculator is in APPROX mode.



And of course when I turn the calculator back to EXACT mode and, Re-ENTER the decimal formatted matrix in the HOME screen the fractional formatted matrix reappears.

You can use the propFrac( command but, having in the EXACT mode setting works better.

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 diamond key. Press and hold the + key for a few seconds and see whether the screen becomes legible.

If this doesn't do it, please respond to this post and we can go on from there.

Having gone five months without a response, I assume either the contrast adjustment or the reset solved the problem.

If the calculator keeps showing you the same function, you can open the Y= editor and erase the function. To turn calculator OFF, press Diamond key then ON.

Hello,
Try to increase the contrast
1. Turn it on
2. press [2nd] and release button
3. Press [UpArrow] and release button
4. Repeat steps 2 and 3 until contrast is adequate.

If that does not work use the link below to install TIConnect software
http://education.ti.com/educationportal/sites/US/productDetail/us_ti_connect.html
Install it on your computer and run it to oppen the main Window. Then connect you calculator to a USB port and, in the TIConnect main window Click the TIConnect TIDeviceInfo. It will try retrieve the info.
If it does your calculator is fine.

If it tells you Device Not found , Click communication settings in same pop up window where it said Not found, and Select Device, Select Cable, Select Port and try OK..

If all that does not work, then it may be time look for a repair shop.

If you are lucky and it works, you should reinstall the OS, which can be downloaded from education.ti.com. You drag and drop the OS on the TIconnect main window. Calculator must of couse be connected to computer.
Hope it helps

Hello,
Try to increase the contrast
1. Turn it on
2. press [2nd] and release button
3. Press [UpArrow] and release button
4. Repeat steps 2 and 3 until contrast is adequate.

If that does not work use the link below to install TIConnect software
http://education.ti.com/educationportal/sites/US/productDetail/us_ti_connect.html
Install it on your computer and run it to oppen the main Window. Then connect you calculator to a USB port and, in the TIConnect main window Click the TIConnect TIDeviceInfo. It will try retrieve the info.
If it does your calculator is fine.

If it tells you Device Not found , Click communication settings in same pop up window where it said Not found, and Select Device, Select Cable, Select Port and try OK..

If all that does not work, then it may be time look for a repair shop.

If you are lucky and it works, you should reinstall the OS, which can be downloaded from education.ti.com. You drag and drop the OS on the TIconnect main window. Calculator must of couse be connected to computer.
Hope it helps

You create a program by using the program editor. Press the "APPS" key and select "Program Editor".

What type of data graph do you want? The TI-89 can plot Scatter, XYline, Box, and Histgram graphs. Use the "Plot Setup" screen to select the desired plot type.

download it again cos the stat/list editor is a app, its not permanantly stuck there. it can be downloaded from the TI website

It has to be that your have gone beyond mathmatical bounds or the physical bounds of the calculator itself or screen.