Question about Texas Instruments TI-86 Calculator

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Turned on ti 86 and have a black screen. I have replaced all of the batteries and still is black.

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Whenever the screen is full and a line with calculation result comes up at the bottom of the screen, the screen all of a sudden shows things in a weird way and can't be read. By press "2nd+mode"(=quit), or try reset button (a small hole which a pin can only be used to press it to RESET. Gud Luck

Posted on Aug 25, 2010

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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.

Sep 05, 2014 | Texas Instruments TI-86 Calculator

1 Answer

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

1 Answer

New batteries in my TI-86 the screen is black


Try adjusting the screen contrast. Turn the calculator on. Press and release the 2nd key. Press and hold the down-arrow key to lighten or the up-arrow key to darken the screen.

If this doesn't do it, please reply to this post and we can try something else.

Feb 11, 2011 | Texas Instruments TI-86 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

Ti-86 screen turned black after replacing the batteries


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.

Sep 13, 2010 | Texas Instruments TI-86 Calculator

1 Answer

Ti 86 will not turn on (I replaced the batteries).


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.

Aug 23, 2010 | Texas Instruments TI-86 Calculator

1 Answer

My screen is black after putting in new batteries in my TI-86


Adjust the contrast. 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, repeat the process using the up-arrow key instead of the down-arrow.

Aug 17, 2010 | Texas Instruments TI-86 Calculator

1 Answer

The screen is black i cant see any thing i replaced the batteries


this is a firmware problem and you may need to upgrade the software or have carrier do it.

Aug 27, 2009 | Texas Instruments TI-86 Calculator

3 Answers

TI 86- Texas instrument


OMG THANK YOU SOOO SOOO MUCH

i had borred my friends ti-86 and when school finished i forgot to return it. i ended up leaving the calculator in my car where the sun fried the battery.
3 months later i brought new batteries and when it turned on i only saw black and i started to freak out thinking i had to buy a new one..

ONCE again thanks for the solution

Jun 17, 2008 | Texas Instruments TI-86 Calculator

1 Answer

No power up


turn it on and immediately pull out the battery: fixed my TI-85 if not its ded :-(

Feb 01, 2008 | Texas Instruments TI-86 Calculator

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