Question about Texas Instruments TI-85 Calculator

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Would not power up.

I haven't turn on my TI-85 for about 10 yrs. now. I thought it would be the batteries so I replaced with new batteries and still doesn't power up.
Does anyone know or have same problem?

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  • kakima May 11, 2010

    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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You may want to try to turn up the contrast on your screen or Darken the screen by hitting "2nd" followed up by up arrow. It may need to have your repeat this several time.

Posted on Jun 03, 2010

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Having gone over a month with no response, I assume this is no longer a problem.

Posted on May 28, 2010

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My ti 84 plus does not want to turn on, i thought it was battery problem so, i bought new batteries but i stil have a blank screen.


Could it be that your screen has been dimmed in error. Turn the calculator on & press the 2nd key and then the up arrow. This darkens the screen.

If this doesn't work, try taking out the backup battery. It is located in the battery compartment, behind a little door that you must take off with a phillips screwdriver. Leave it out for about 10 hours. If this doesn't work, try replacing the backup battery.

Hope this helps.

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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 that doesn't work, try a hard reset. Remove one of the four AAA batteries. Press and hold the ON key. While holding down the ON key, replace the battery.

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TI-84 Calculator does not turn on.


Hi,
The applications that run on the TI84Plus Sliver Edition run without a hitch on the TI84Plus and also on the TI83Plus. The only major difference between the 84Plus and the 84Plus SE is the amount of flash memory.
Here is what I would suggest to you.
  1. Replace the main batteries with fresh ones.
  2. Adjust the screen contrast: a. Press [2nd] key and release it. b. Press and HOLD [UpArrow] to darken or [DownArrow] to lighten screen.
  3. Clear the calculator Ram. Usually it is cleared if the calculator is left without main batteries for a while,but you never know.
  4. To clear the Ram, press [2nd][MEM][7:Reset][1:All Ram][2:Reset]. Press [CLEAR] to erase the "Ram Cleared" message.
  5. Go to the education.ti.com, and download the TI Connect software, if you do not have it already.
  6. Install it on the computer and run the program.
  7. Then connect the calculator to the computer using the TISilver Link USB cable or the Standard USB to mini B cable (if you have one).
  8. Turn you calculator ON
  9. In the TI connect program window, press the Updates button.
  10. The TI connect should recognize you calculator and ask you what to download.
  11. At first select to download the latest OS (version 2.43 at this time).
  12. Later you can click the Updates button and select the Latest version of the applications installed on calculator.
If you calculator does not suffer from hardware problems, your calculator should be restored to health.

Hope it helps.

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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.

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My TI-83 drains batteries as well. used many different new batteries but it still didn't work. is my calculator permanently damaged or can it still be fixed?


About the only thing that I can can think of is that you may need to replace the internal battery. It is located in a little door with a screw right above the AAA batteries.

Another thought. The calculator may be staying on and not doing an auto shutoff. The calculator should turn itself off if you forget to turn it off. You can check to see if this is happening by leaving the calculator on, going back later and checking to see if it turned itself off.

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I just put in new batteries. I just hit the on button... nothing happened. It wasn't woking before so I thought the batteries were dead.


Hello,
Here is what the TI knowledge base says about a calculator failing to turn on

For the TI-Nspire™ Family:
  1. Remove thekeypad (for TI-Nspire) or the battery door (for TI-Nspire CAS) andremove at least 1 battery from each column of batteries. After 2-5seconds, reinsert the batteries and turn the unit on. This will causethe unit to reboot the operating system.
  2. Remove the keypad(for TI-Nspire) or the battery door (for TI-Nspire CAS) and remove atleast 1 battery from each column of batteries. After 2-5 seconds,reinsert the batteries and LEAVE THE UNIT OFF (do not turn on and thenback off). Hold down [Home] [Enter] [P], and while holdingthese keys, press [On]. The device will boot up as in the previousreset, but will display a menu with the following options. Please tryoptions 1, 2, 3, and 4 in that order. ** The [Home] key is located atthe top right of the TI-Nspire keypad and has a picture of a house onit.
Note:TI-Nspire family model options 2 and 4 above require that the OS be installed. The reset menu will only display if the unit is off and batteries have been removed/replaced as described above.

1. Cancel - The most non-intrusive reset option; no changes are made, the unit restarts.
2. Delete Operating System – The operating system will be deleted without deleting any documents.
3. Delete Document Folder Contents – This will delete the user’s documents, but will not delete the OS.
4. Complete Format – This will delete the OS and all documents for a total erase of memory.

Hope it helps you solve the problem.

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3 Answers

Screen Solid Balck


Hey, if this is a ti-89, press green diamond button, then -, keep going and it soguld fix itself

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