Question about Texas Instruments TI-86 Calculator

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I have 2 Texas instrument TI-86 both will not come on I have changed both (4 AAA bateries) & the back up batteries the unit will not turn on what do I do now?

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I am having the same trouble....I found this and will try it today. Hope this works...I hate to have to buy another one.

http://education.ti.com/sites/US/downloads/pdf/TIGraphingCalculatorCare.pdf

Posted on Aug 08, 2008

Two suggestions. First, and I apologize if this is too obvious but sometimes the obvious gets overlooked, turn it on, then press 2nd and the "up arrow". Many calculators get a quirk that causes the contrast to reset to zero when batteries are removed or memory is reset.

Second...try the coin-cell battery that keeps the memory intact. These last a long time, but they do eventually run out.

Posted on Sep 13, 2008

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1 Answer

How do I reset my TI-86 after a long period of no use.


Every time you change batteries this will happen to you. First press 2nd then press and hold the down arrow. Hold until their is no black in the background but you can still see the numbers on the screen.

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I've had my ti-86 for a very long time & recently it just quit working. I changed the AAA batteries & the back up battery & it will not come back on. Please 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 release the 2ND key. Press and hold the Up-arrow key for a few seconds and see whether the screen becomes legible. Does it?

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TI 82 Does it need the disk battery and 4 AAA batteries to work?


No. The calculator runs on the four AAA batteries. The lithium battery is solely to retain the contents of the memory while you change the AAA batteries. If you don't care about retaining the memory, you don't need the lithium battery. You do, however, need the AAA batteries to use the calculator.

Jul 31, 2011 | Texas Instruments TI-82 Calculator

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I stop using my TI-86 for a few months and know


I hadn't used mine in years and had the same problem. Essentially you just need to give it a workout to get all the pixels working properly again and then it'll be just fine. I adjusted the contrast between full dark and nothing multiple times and turned the calculator on and off after each cycle and now it works like new.

Jul 06, 2010 | Texas Instruments TI-86 Calculator

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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

I have an older 1995 TI-82 that suddenly will not turn on. I changed the batteries including the watch battery and still nothing. Is there a reset or do you have a suggestion?


The following are 4 different things you can try that is on the Texas Instruments Website: " 1. Try a new set of AAA batteries. 2. Adjust the contrast by pressing and releasing the [2nd] key followed by pressing and releasing the up arrow; repeat as necessary. To adjust or lighten the display, use the down arrow. 3. 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. 4. 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. "

Feb 12, 2010 | Texas Instruments TI-82 Calculator

1 Answer

Changed out both the back up battery and the 4 AAA's .calculator is still not coming on. what can i try next.


Hello,
When you change the batteries the display reverts to default setting. My optimistic guess is that the screen display is so light that you cannot see anything on it. This can be arranged.

A Try this before thinking of repairs.

  1. Push the ON button.
  2. Even if you see nothing, press the [2nd] key and release it.
  3. Press and HOLD the UpArrow key until the screen darkens.
  4. You may have to keep pressing UpArrow for a little while before you see anything.
B If that does not work
  1. Remove one of the AAA batteries.
  2. Press and hold the [CLEAR] key.
  3. Whileholding [CLEAR], reinsert the AAA battery and then
  4. turn the calculatoron.
  5. The calculator should display the message "RAM Cleared".
  6. Release the [CLEAR] key and then press it one more time to remove the message "RAM Cleared".
C. Third option

  1. Remove batteries including the backup battery for 5minutes.
  2. After the 5 minute period, reinsert all of the batteries and
  3. turn the calculator on.
  4. Adjust the contrast if necessary.
D. Last option

The last option requires the reinstallation of the system. So to use it you must download the TIConnect 1.6 software from education.ti.com. You must have the TI USB SilverLink or the TI Black serial cables ready.You must be connected to the Internet.
  1. Remove one of the AAA batteries.
  2. Press and hold the [DEL] key.
  3. Whileholding [DEL], reinsert the AAA battery and then
  4. turn the calculatoron.
  5. The calculator should display "Waiting...Please install calculator software now".
  6. Connect the TI Connectivity cable between the computer and the calculator.
  7. Click on Start >> Programs >> TI Tools >> TI Connect >> TI OSDownloader.
  8. Follow the on-screen directions to reinstall the calculator's OS.
If the message "Error! Press any key to turn unit off. Then turn unit backon." appears on the graphing calculator, quickly, remove one batteryfrom the calculator and reinstall it while the transfer is taking place.

If all else fails you can contact Texas Instruments at ti-cares@ti.com

Hope it helps.
Thank you for using FixYa.

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1 Answer

How can I revive my TI89 after two years of not using it?


It could be that you need to replace the backup battery located behind a little door with a screw in the battery compartment. If this doesn't work, try resetting your calculator by leaving backup and AAA batteries out for about 8 hours and reassembling it. Hopefulyy this will work. Good luck

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1 Answer

I cant turn my calculator on


I had the same problem, I took all five batteries out and left it for about an hour and put them back in and it turned on stating that the RAm was clear and now it works fine.

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