20 Most Recent Texas Instruments TI-89 Calculator - Page 9 Questions & Answers

Well, not a long time ago I have had a similar trouble regarding to my Texas Instruments Calculator Voyage 200. It was forzen too doing some calculus. Also, one friend had a similar problem regarding to the fozen calculator... I fixed it by reading in the manual that it can be reset!!!...There is a combination of keys that you can press to reset the calculator...this obligates the calculator to load the OS from the EPROM memory where is this basic sofware!!!... If I do not remember wrong the keys are: 2nd + Lock + on/off keys!!! But try to look for the manual and in some part of it is those key combination!!! Good Luck!

Increase the screen contrast. While holding the diamond key, press the + key to darken the screen. If you go to far, use the diamond and - keys.

Try a reset. Press and hold the 2ND, left-arrow, and right-arrow keys, then press and release the ON key.

If this doesn't do it, remove one of the AAA batteries. Press and hold the ) and (-) keys while replacing the battery. Continue to hold the ) and (-) keys for five seconds before releasing.

You need to install the OS
hope it will help

try to reset the screen
install the 4 batteries
take out 1 battery
press and hold these keys let arrow+ right arrow+ 2nd + on and then install the battery
this should reset the screen if it will not help then its a problem with the LCD
hope it will help

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 reply to this post and we'll go on from there.

To convert a single result from symbolic to numeric form, press the diamond key and then the ENTER key. To have all results come out in numeric form, press MODE F2, press down-arrow to move down to the Exact/Approx line, press right-arrow, and select APPROXIMATE. Press ENTER twice to save the settings and exit the mode editor.

Use the (-) key next to the decimal point key to enter negative values. The - key is to subtract one value from another.

The ^ key is right above the divide key in the rightmost column of the keyboard.

reload your OS and any programs you had using TI Connect on the ti.com website.

try this
take one batter out
hold right left arrows 2nd and on
put the battery back while still holding the keys
the screen will reset it should help
if it will not help its an hardware issue
if you want to fix the ti89 let me know
[email protected]

Jack

Yes. If the calculator is showing something like ln(2) for an answer, press diamond ENTER to convert to a numeric answer. To have all results come out numerically, press MODE F2, use down-arrow to move to Exact/Approx, right-arrow, and select APPROXIMATE. Press ENTER twice to save the change.

To convert any result to decimal, press diamond followed by ENTER. To have all results come out in decimal, press MODE F2, use down-arrow to move down to the Exact/Approx line, press right-arrow, and select APPROXIMATE.

2ND [square-root] 2 0 =

The square-root is the shifted function of the multiply key. If the calculator shows you a symbolic result, press diamond ENTER to get a numeric result.

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.

Hi
you cant do anything
its a common problem with the TI89
if you want to fix the Calculator let me know
[email protected]

Jack

Take out one battery. While holding the "On" button, put the battery back in. I can honestly not explain what happened, but it has happened to me multiple times as well. You might have to do this more than once, but within a few attempts, it should start working again. Tell me how it works out, and hope this helps!