Question about Texas Instruments TI-81 Calculator

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My TI-81 has completely stopped working. I have put in new AAA batteries along with a new CR1620 battery. Any suggestions?

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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.

If this doesn't do it, please append a comment to this post and we'll go on from there.

Posted on Sep 07, 2010

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This worked for me...
If you replaced both the 3A's and the memory battery (the CA 1620 or 1616) consider which order you replaced them. I replaced all of the 3A's, then when that didn't work, I replaced the CA-1620. Still nothing. I took out all of the 3A's and put them back in, and it came on.

If you still have nothing, find the right light to make sure that the brightness hasn't reset because of the loss of power and follow the directions above. (2nd and up arrow)

If you have tried all of the solutions here and still have nothing, you may want to consider an upgrade to an 83 or higher.

Posted on Oct 05, 2010

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1 Answer

Wont turn on


Good morning, afternoon, evening or night; whatever time of day you are viewing this solution post. Thank you for choosing FixYa to assist you. You are having problems because you calculator won't turn on. I think you should try changing the batteries. Did you know that your calculator has two batteries powering it? Not only are the 4 AAA batteries powering it, but there is also a CR 3V Lithium Back Up battery powering it as well. First, try changing the 4 AAA batteries. If that still does not power your calculator properly, you will need to replace the lithium back up battery. You can find this at a department store or store that carries electronics. To do this, open your regular battery compartment. Above the AAA batteries is a compartment that says "BACK UP BATTERY CR1616 OR CR1620" with a picture of it. Use a small crosshead screwdriver to open the compartment. Take the old battery out and replace it with the new one. Rescrew the lithium battery compartment back on and close the AAA battery compartment. Turn on your calculator and see if that works. I hope this solution solves this.

Sep 27, 2011 | Texas Instruments TI-83 Plus Calculator

2 Answers

What kind of battery does the TI-83 take


4 AAA batteries and one CR1616 or CR1620 button batter for backup

Source: http://en.wikipedia.org/wiki/TI-83_series

Sep 15, 2011 | Texas Instruments TI-83 Plus Calculator

1 Answer

My ti 83 will turn on when i press the clear thing but when i try to put something in nothing happens


Hi imagenius1,

You need to free up some memory. Try clearing your RAM memory. Your calculator should operate properly afterward.

Press [2nd] [MEM] [7] [1] [2]

If the steps above did not reset the memory to your Ti 83 family calculator try the procedures below.

Please be prepared to re-install the calculator's OS if you run through this process.

If you have a straight Ti 83 without the Plus or, Silver Edition label goto (Procedure 2) below. If your Ti calculator is a Ti 83 Plus or better goto (Procedure 1).


(Procedure 1).

  1. Try a new set of AAA batteries.

  2. Remove one of the AAA batteries. Press and hold the [CLEAR] key. While holding [CLEAR], reinsert the AAA battery and then turn the calculator on. The calculator should display the message "RAM Cleared". Release the [CLEAR] key and, then press [CLEAR] one more time to remove the message.

  1. Remove one of the AAA batteries. Press and hold the [DEL] key. While holding [DEL], reinsert the AAA battery and then turn the calculator on. The calculator should display "Waiting...Please install calculator software now". Follow the instructions for the TI-83 family or TI-84 Plus family to reinstall the calculator operating system.



  2. Steps to re-installing the operating system:
    ~Connect the TI Connectivity cable between the PC and the calculator.
    ~Click on Start >> Programs >> TI Tools >> TI Connect >> TI OSDownloader
    ~Follow the on-screen directions to reinstall the calculator's OS. If you could not install the new OS on your calculator goto step 4.


  3. Remove all of the batteries including the round lithium battery for 5 minutes. After the 5 minute period, reinsert all of the batteries and turn the calculator on. Adjust the contrast if necessary.

  4. If the above process did not reset your calculator. Try re-doing (Procedure 1) and, extend the time in step 4, by 5 minutes to 10 minutes before you put all the batteries back in the calculator.

(Procedure 2).


For a straight Ti 83 without the Plus or, Silver Edition label try the procedure below.


  1. Try a new set of AAA batteries.



  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.


Jan 06, 2011 | Texas Instruments TI-83 Plus Calculator

1 Answer

I have replaced both the 4 AAA batteries and the cr1620 battery and the TI-82 will still not turn on. What else can I try?


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.

Sep 26, 2010 | Texas Instruments TI-82 Calculator

1 Answer

I put new lithium triple aaa batteries in my TI-83. Nothing happened . days later it turned on worked for a little while then stopped. would it help to change the round lithium battery? Do you know what...


The button cell backup battery keeps the memory electrically refreshed when the calculator is turned OFF. The necessary power for regular use is supplied by the 4 AAA batteries (main power). That nothing happened when you put in a fresh set of (expensive) lithium batteries may be due to the screen being too dim to see anything.

If the calculator displays RAM CLEARED each time it is turned on, it may be due to a depleted backup battery. The battery model number is CR1616 or CR1620. On my TI84PLUS the backup battery is of type 303 (Sony) or SR44SW (Maxell).

Sep 05, 2010 | Texas Instruments TI-83 Plus Calculator

1 Answer

I have a TI-81 that stop working, I installed the


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 at all. 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.

Mar 16, 2010 | Texas Instruments TI-81 Calculator

1 Answer

Low screen display contrast


Adjust the display contrast by pressing and releasing the 2ND key, then pressing and holding the Up key to increase the contrast or the Down key to decrease the contrast.

May 29, 2009 | Texas Instruments Office Equipment &...

2 Answers

TI-84 will not trun on.


Try the following

1) Remove one of the AAA batteries, hold down on the DEL key while reinserting the AAA battery. The handheld might display Waiting…Please install calculator software now. Ignore this message. Remove and reinstall one of the AAA batteries again This time, do not hold down the DEL key.
2) Remove one of the AAA batteries, press and hold the [on] key for 10 seconds, release, replace the battery, then turn the unit on. Adjust the contrast.
3) Remove the AAA batteries for three hours. After the three-hour period, reinsert the batteries and turn the handheld on. Adjust the contrast if necessary.

If needed, reinstall OS by downloading the OS from the TI site and ....
On your computer, choose Start, Programs, TI Tools, TI Connect, TI OS Downloader.

(I am not the one who came up with this answer, but found it on an other site. If this doesn't work, please let me know)

Gr Marijn

Nov 28, 2007 | Texas Instruments TI-84 Plus Calculator

1 Answer

Help!


An electronics store or Radio Shack should carry this. Take your old one with so that they can test it - it should be at least 3V. The battery type is CR1616 or CR1620

Apr 13, 2007 | Texas Instruments TI-83 Plus Calculator

1 Answer

Took a battery out, put it back in and it wouldn't turn on.


Try replacing both the AAA batteries and the back-up batteries. This should probably fix the problem.

Feb 10, 2007 | Texas Instruments TI-81 Calculator

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