Question about Texas Instruments TI-86 Calculator

# Black lines across screen

My ti-86 has black lines across the screen and i took out the batteries and did 2nd up button to change the contrast but the lines are still there. why!?

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Posted on Aug 12, 2009

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Are these black or blank lines?

I just successfully fixed my TI which had about half of the horizontal lines completely dead. I opened the calculator and used hot air gun to carefully warm the connection between the black ribbon cable and the board behind the LCD. All the bad connections were between the board and the black folded ribbon cable.

After warming it up I used a blunt small plastic object to glue the ribbon back to the board. The purpose of the hot air is to melt the glue.. The connection in question is hard to access because it is between the fold so you have to remove some of the black tape before you can stick something between the folds and access the connection.

Good luck :)

Posted on Sep 02, 2012

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Posted on Jan 02, 2017

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## Related Questions:

### 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

### 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

### My ti-86 screen is black is that normal. I have not used it in years, but i put fresh batteries

Hello, First of all no; it is not normal for your screen to be black. How can you enjoy the wonderfulness that is Ti with a dark screen. For the solution; it sounds like your contrast needs to be adjusted. Hold 2nd and down. The screen should lighten. If it reaches about where you can not see the cursor, then press 2nd and up and this will darken it. Hope this helps; Happy Calculating

Aug 27, 2010 | Texas Instruments TI-86 Calculator

### 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

### I just changed the batteries and the screen is black when i turn it on if its in direct light i can see what i am typing..

I had the same problem as this. This is because when you might have changed the contrast on your calculator when your old batteries were running low and you need to reset the contrast. Here is what you do:

press the orange "2nd" button, then press the "down arrow" button, then the orange "2nd" button, then the "down arrow". do not press the buttons at the same time only one after the other and KEEP GOING. The screen will eventually lighten up and you are all set.

Apr 26, 2010 | Texas Instruments TI-86 Calculator

### My TI-86 has a completely black background, please let me know how to fix it. thanks

Hi,
After changing the batteries the calculator is restored to factory defaults, but the screen contrast may change. In your case (even if you did not just change batteries) the screen may be too dark. Lighten it a bit.
Press [2nd] key and release it.
Press and hold [DownArrow] until screen is light enough.

Hope it helps.
Thank You for using FixYa and for rating the solution.

Nov 15, 2009 | Texas Instruments TI-86 Calculator

### The screen on my TI-86 calculator is black when I turn it on. What do I do?

Hello,
You can adjust the contrast on the screen of your TI86 by following the procedure below.

1 Press and release the yellow [2nd] key.
2 Press and hold UpArrow or DownArrow (above or below the half-shaded circle).
¨ To darken the screen contrast, press and hold UpArrow.
¨ To lighten the screen contrast, press and hold DownArrow.

Hope it helps.

Nov 04, 2009 | Texas Instruments TI-83 Plus Calculator

Hello

Press and release the yellow [2nd] key
Press and hold [Uparrow] to increase contrast or [DownArrow] to decrease it.
Try holding the the Up or down arrow. If you see that it does not do much then

Press [2nd] and release
Press [Uparrow] to increase.
Repeat the two steps in sequence until contrast is to your taste.

Hope it helps

Jun 17, 2009 | Texas Instruments TI-86 Calculator

### TI 86

Hello,
If batteries are inserted correctly you can adjust the contrast
Press [2nd] key and release it
Press and hold [UPArrow] key to darken till contrast is dark enough.

To enlighten screen, do as above but use the [DownArrow] key.
Hope it helps.

Oct 24, 2008 | Texas Instruments TI-86 Calculator

### 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

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