Question about Texas Instruments TI-86 Calculator

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I replaced the batteries and now the screen is black when turned on. Do I need a new calculator or is this something that can be fixed?? Any help would be greatly appreciated. Thanks.

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Press end and then hold the up arrow and the screen should get lighter

Posted on Feb 05, 2010


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I have a TI 86 calculator that I have not used in a few years. When I turned it on yesterday, the screen is mostly black and I can not see anything that is typed. I tried replacing the batteries but am...

Turn the calculator on. Press and release the 2nd key. Press and hold the down-arrow key until the screen lightens. If you go too far, press and release the 2nd key and then press and hold the up-arrow key.

Jul 19, 2011 | Texas Instruments TI-86 Calculator

2 Answers

My screen turns on but when you do anything it has random numbers, line and letters on it and i need to get it fixed immediatley

I've had this issue before with my TI-83 Plus. I'm not sure exactly the solution I used, but these steps progress through the mildest to most extreme methods of fixing the calculator.

Solution 1: Take the batteries out.

Odds are you've tried this already, but it bears mentioning.

With the calculator on, remove the triple A batteries housed in the back. After a few seconds, replace them and turn the calculator on.

Solution 2: Clear the RAM.

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 it one more time to remove the message.

Solution 3: Reinstall the operating system

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"

Here is the website to reinstall your OS. First you'll need the TI-Connect software.

Solution 4: Remove all sources of power. This is a risky move, but if your calculator will absolutely not work after you try even reinstalling the operating system, it might be your last hope.

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.

May 12, 2011 | Texas Instruments TI-83 Plus Calculator

1 Answer

New batteries, turned it on and screen is completely black.

First, try adjusting the contrast. Turn the calculator on. Press and release the 2ND key. Press and hold the down-arrow for a few seconds and see whether the screen lightens.

If that doesn't do it, remove all four AAA batteries. Press and hold the ON key for at least ten seconds. Replace the batteries.

If that doesn't do it, add a comment here and we'll go from there.

Jun 02, 2010 | Texas Instruments TI-83 Plus Calculator

2 Answers

I replaced the batteries on my TI-83 and now the screen is black

Reduce the contrast.
1. Press [2nd] key and release it
2. Press [DownArrow] and release it
3. Repeat steps 1 and 2 in sequence until screen lightens to your taste.
Hope it helps.

Sep 23, 2009 | Texas Instruments TI-83 Plus Calculator

3 Answers

Blank lines across the screen of a TI-86 graphing calculator

Try this, hook up new battery and go to MODE and darken and lighten the screen.. do it ten to fifteen times. if that doesn't help, try hook up most left and most right's battery terminal to a DC supply at 4.5V. dont go above 4.5 it will fry your calc (it is design to handle 3V). now you are forcing extra juice into the dead LCD screen lines... and reapeat the MODE + darken trick. I fixed mine like that! Works! and remeber to leave it completely black(darkest) for a while to keep that dead line alive!

Jul 06, 2009 | Texas Instruments TI-86 Calculator

4 Answers

Screen fully black

Black-Screen/Black-Pixel Fix for TI-Calculator

This will erase all memory and reset defaults.

1. Remove 1 AAA Battery
2. Press and Hold 'ON' for 30 seconds
3. Replace AAA Battery
4. Adjust Contrast to appropriate level

If this fails, try again with ALL Batteries removed including
the backup Lithium Battery.

If all else fails, try the following reset procedure:

1. Remove ALL Batteries (inc. Backup)
2. Let Calculator sit with no batteries for 2~4 hours.
3. Hold 'ON' for 30 seconds.
4. Replace all the batteries (May be good idea to use new batteries
just in case old ones were dead)
5. Turn on Calculator
6. Change Contrast to appropriate level

- Remember to use correct batteries or calculator may not work. The
correct batteries are Alkaline, Rechargable Batteries are TOO WEAK,
Heavy Duty batteries are TOO STRONG.

Oct 09, 2008 | Texas Instruments TI-89 Calculator

9 Answers

Ti 83 black screen problem

i had the same problem. If you hit 2nd down 2nd down 2nd down and keep repeating untill the screen clears it should solve the problem. i tried the other solutions that tried clearing the memory and they didnt do anything but erase the equations i had previously put in it (great). But this should work.

Feb 22, 2008 | Texas Instruments TI-83 Plus Calculator

1 Answer

Texas intrument TI-83 Plus calulator

have you tried to replace the back-up batteries? That would probably fix the problem that your are facing.

Aug 20, 2007 | Texas Instruments TI-83 Plus Calculator

2 Answers

TI 83 Plus Calculator

You can try to turn the contrast down by pressing 2nd and then hold "down" If the screen does not fix, put new batteries in (including the back up batteries). The problem will be resolved. Hope this helps...

Aug 18, 2007 | Texas Instruments TI-89 Calculator

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