Question about Texas Instruments TI-86 Calculator

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I've replaced all the batteries including the backup battery on my TI-86 and it still doesn't power on. I also tried adjusting the contrast.

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It sounds like the calculator is broken. Well broken past the point where you can fix it by yourself. You can try contacting TI about the warranty.

Posted on Mar 05, 2011

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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

Replaced batteries now i have black screen


Check the contrast levels (2nd+Down). If that doesn't work take out the 4 aaa's and set the calculator down and wait for a minute or so (for the power to drain from the capacitors) replace them and check if it worked. If that doesn't work, take out all batteries, including the small watch battery and leave it sit for a minute or so, replace them and check. Finally you can try calling Ti-Cares (1-800-842-2737) they're very helpful.

Aug 06, 2011 | Texas Instruments TI-83 Plus Calculator

2 Answers

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.

Adjusting the Contrast
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

2 Answers

Black screen


Try adjusting the contrast. It may be too dark. Turn the calculator on press the 2nd key and the down arrow. This is how to adjust the contrast and will lighten the screen. You can darken the screen the same way, but use the up arrow instead.

Aug 25, 2009 | Texas Instruments TI-86 Calculator

2 Answers

A friend gave me a TI-86 graphing Calc. I wont turn on!!!


maybe try changing the small memory battery inside, I think its a cr1616 or cr1620. If this doesn't work use it as a paperweight.

Apr 23, 2009 | Texas Instruments TI-86 Calculator

1 Answer

Calculator (TI-86) will not come on.


Hello,
Make sure batteries are fresh (unspent)
Make sure batteries are inserted correctly, respecting the + - diagram.
To adjust contrast:
1. Press and release [2nd[ key
2. Press and hold [UpArrow] key to darken screen or press and hold [DownArrow] to lighten it. Keep it until contrast is to your liking.
Hope it helps.


Mar 15, 2009 | Texas Instruments TI-86 Calculator

1 Answer

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

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

2 Answers

Blakck screen


Batteries:
Make sure to replace the "battery backup" too the little lithium ion battery

Try Adjusting contrast:
Hold down "[2nd]" key press up or down arrow repeatedly to lighten or darken contrast.

First attempt reseting:
Step 1: Remove all the batteries
Step 2: Hold "Clear" key down
Step 3: Still holding "Clear" key reinstall batteries
Step 4: Still holding "Clear" key press "On" key until home screen is displayed.

Second shot reseting:
remove all batteries including lithium ion (backup battery), wait 3 hours and reinstall batteries.

Third Shot reseting:
Step 1: Remove a battery
Step 2: Hold down "DEL" key reinstall battery
Step 3: Possible msg pops up saying "Waiting ... Please install software" IGNORE msg and take out battery again
Step 4: Reinstall battery do not hold down "DEL" key

reseting will cause the handheld to loose all of its stored memory.

Hope that helps!

Jan 20, 2008 | Texas Instruments TI-83 Plus Calculator

1 Answer

Black screen


If one of these solutions doesnt work you will most likely need to purchase a new calculator.

Batteries:
Make sure to replace the "battery backup" too the little lithium ion battery

Try Adjusting contrast:
Hold down "[2nd]" key press up or down arrow repeatedly to lighten or darken contrast.

First attempt reseting:
Step 1: Remove all the batteries
Step 2: Hold "Clear" key down
Step 3: Still holding "Clear" key reinstall batteries
Step 4: Still holding "Clear" key press "On" key until home screen is displayed.

Second shot reseting:
remove all batteries including lithium ion (backup battery), wait 3 hours and reinstall batteries.

Third Shot reseting:
Step 1: Remove a battery
Step 2: Hold down "DEL" key reinstall battery
Step 3: Possible msg pops up saying "Waiting ... Please install software" IGNORE msg and take out battery again
Step 4: Reinstall battery do not hold down "DEL" key

reseting will cause the handheld to loose all of its stored memory.

Hope that helps!

Jan 12, 2008 | Texas Instruments TI-83 Plus Calculator

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