Question about Texas Instruments TI-84 Plus Calculator

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My calculator screen turned completely black, what do i do to fix it?

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  • kakima Oct 07, 2010

    Turn the calculator on. Press and release the 2ND key. Press and hold the down-arrow key and see whether the screen lightenes. Does it?

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Having gone over five months without a response, I assume the suggested contrast adjustment solved the problem.

Posted on Mar 29, 2011

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1 Answer

Everytime i turn my calculator on the screen is black it's a like a black rectangle. how can i fix this and get my calcualtor working normally again?


Adjust the screen contrast. Turn the calculator on. Press and release the 2ND key. Press and hold the down-arrow key for a few seconds to lighten the screen. If you go too far, repeat the process using the 2ND and up-arrow keys.

Dec 09, 2010 | Texas Instruments TI-83 Plus Calculator

1 Answer

Hi. I changed the batteries on my TI-86 and when I tried to turn it back on the screen was completely black. Do you know what the issue could be?


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 the screen is completely black, go the other way, using the Down-arrow instead of the Up-arrow.

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

Nov 04, 2010 | Texas Instruments TI-86 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

1 Answer

TI-84 Plus Calculator: my calculator screen is black everytime i turn it ...


Turn the calculator on. Press and release the 2ND key. Press and hold the down-arrow key for a few seconds until the screen lightens.

Obviously, if you've gone too far, press and release the 2ND key, then press and hold the up-arrow key.

May 17, 2010 | Texas Instruments TI-84 Plus Calculator

1 Answer

My calculator screen is completely black. How do


Turn the calculator on. Press and release the 2ND button. Press and hold the down-arrow key for a few seconds.

Apr 07, 2010 | Texas Instruments TI-86 Calculator

1 Answer

How do you fix a TI-89 calculator whose screen is half dark?


use a metallic clip to put pressure along the top side of screen81cc2b4.jpg

Nov 11, 2009 | Texas Instruments TI-89 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

3 Answers

Screen is all black


Try adjusting the brightness by pressing 2nd key or witchever name is on yours for the Alt key + the up or down arow key(as you see fitted)

Aug 25, 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

2 Answers

Horizontal lines obstructing the second half of the ti 83 calculator screen, anyone know repair tips?


I had the same prob with vertical lines on the screen, and getting messed up when there was lots of numbers on the screen.

Solution: Change your batteries. Put some freshies in then adjust your contrast until you see the little black box. If you still have a problem with the lines, darken the screen until it's black (2nd up repeatedly) and let it sit for a couple minutes. Lighten your screen back to normal (2nd down) and turn off then turn her back on.

Jan 17, 2007 | Texas Instruments TI-83 Plus Calculator

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