iFixit - Answers With Device "TI-84 Plus"

TI-84 Plus: My buttons are not working

Fri, 03 Oct 2025 12:51:07 -0700

No button work except on

⟐ Marked as duplicate October 03, 2025 at 12:51 MST

TI-84 Plus: The Entry/Solve button is not working?

Mon, 01 Sep 2025 18:35:00 -0700

Ok so I have a TI-84 Plus yellow-black calculator ( the ones that says school property) and I had it for a couple of years and now the entry/solve button doesn't work. All other buttons work but not that. Is there a way to fix it and dissemble a TI-84 Plus.

⟐ Commented September 01, 2025 at 18:35 MST

TI-84 Plus: The Alpha key used to create fraction will not respond when in Y=

Mon, 18 Aug 2025 20:13:35 -0700

The alpha key es not respond when in the Y= ? How do I fix this?

⟐ Commented August 18, 2025 at 20:13 MST

TI-84 Plus: My calculator will not turn on

Sun, 11 May 2025 15:37:43 -0700

My calculator kept saying low battery every time i would turn it on, but during one of my exams it turned off and ever since it has not turned on.

I have tried charging it, when I plug it in nothing displays on the screen same for when I replaced all the AAA batteries.

⟐ Answered May 11, 2025 at 15:37 MST

TI-84 Plus: Line of keys not working.

Thu, 16 Jan 2025 12:39:45 -0700

I've had my calculator for years and use it frequently. Today, an area of keys - specifically "0", "1", "4", "7", ",", "sin", "apps", "x^2", "(", ")" stopped working. All other keys work fine. I've tried restarting, system reset, and changing batteries. I don't know if it's possible water damage (I have cats) or something else.

⟐ Answered January 16, 2025 at 12:39 MST

TI-84 Plus: Will not turn on even after replacing batteries

Wed, 23 Oct 2024 20:32:38 -0700

I replaced the AAA batteries but my calculator still won’t turn on

⟐ Commented October 23, 2024 at 20:32 MST

TI-84 Plus: Calculator turns on but keys don't work

Wed, 23 Oct 2024 18:15:54 -0700

Hi,

I have a TI-84 Plus. The calculator’s keys stopped working, as I was using it yesterday. I could still see the numbers I had typed, but could no longer type anything.

I took the batteries out and put them back in. I was able to turn on the device, but couldn’t do anything else. So power button is the only thing that works for me. I can’t even turn it back off.

I tried removing the internal battery. Didn’t work.

I took the entire calculator apart and cleaned the keys. Didn’t work.

I tried connecting the calculator to a computer via a usb mini cable but I wasn’t able to make the TI Connect CE software recognize the device. When I try to connect the TI when it is ON, it stops blinking with the cursor the moment the usb cable is plugged in. However, the TI CONNECT CE software doesn’t list it as a connected calculator.

Is there anything else I can do to help fix it?

⟐ Answered October 23, 2024 at 18:15 MST

TI-84 Plus: Unable to access F1-F5 menus despite all other alpha functions working

Wed, 02 Oct 2024 11:04:51 -0700

While I was trying to solve a logarithmic question, I tried to find the logBase( operation via pressing [ALPHA] > [WINDOW], however doing that only leads me to the Window screen and not the F2 screen as I had hoped.

I tried the same thing with the other function menus, and the result was the same thing for each and every button on the top row. All other alpha functions work, I can still type in the alphabet along with the other special characters available when you press the alpha button, I just can’t access the F1-F5 menus. This calculator is on firmware version 2.43, so I believe it’s not firmware related. It has some applications installed from the time that my dad used this calculator in college, however I doubt that any of them would interfere with my ability to access the F1-F5 menus.

I made a quick video to go along with this just in case if my question doesn’t make sense.

⟐ Commented October 02, 2024 at 11:04 MST

TI-84 Plus: Calculator seems to be unresponsive

Wed, 14 Aug 2024 06:00:26 -0700

My calculator turns on and shows the ram cleared after turning on and then when you try to input anything the cursor just gets stuck and hangs. Nothing happens after that. it is unresponsive and does not responds to any input given and just stays blank. i have removed all the five batteries and replaced but still the same. when i try to connect it with my laptop it not being detected by the software.

⟐ Answered August 14, 2024 at 6:00 MST

TI-84 Plus: Sometimes doesn't turn on, also randomly goes off

Sat, 25 May 2024 07:37:56 -0700

I saw the issue for randomly shutting off. I'm not sure if the won't turn on is the same issue or a different one. I can hit the on button and nothing happens, but then after trying a few times, it will come on. It also randomly will shut off.

⟐ Answered May 25, 2024 at 7:37 MST

TI-84 Plus: Why is my screen frozen

Tue, 14 Nov 2023 07:26:50 -0700

When I turn on my calculator I none of the buttons I press work, the cursor is blinking on the screen but I can’t even turn the calculator off. I tried removing the batteries and charging it and that didn’t work.

⟐ Answered November 14, 2023 at 7:26 MST

TI-84 Plus: Will this operate without batteries?

Sat, 09 Sep 2023 07:20:11 -0700

Received the calculator from someone for my granddaughter. No user guide or charging cord. I happened to have the correct cord from another TI calculator. I have no idea how to use the device but my question is can the calculator be used by being charged with that cord alone and with no AAA batteries inside? Also, should there be a light to show the device is charging? I’ve been charging the device for about an hour, no batteries inside, and no light comes on. Tried to turn on but didn’t come on. Thank you.

⟐ Commented September 09, 2023 at 7:20 MST

TI-84 Plus: Why does the screen show scattered lines?

Sat, 09 Sep 2023 07:15:07 -0700

This is what it looks like when its on the normal screen, right after being switched on. What can I do to fix this?

⟐ Answered September 09, 2023 at 7:15 MST

TI-84 Plus: Arrow Keys don't scroll through previous calculations

Sun, 28 May 2023 09:58:29 -0700

The "normal" behavior of the arrow keys is to scroll up and down through previous questions and answers, but my calculator's ones act like the "home" and "end" keys. I've tried multiple factory/default resets and it still doesn't change.

⟐ Answer accepted May 28, 2023 at 9:58 MST

TI-84 Plus: Not responding to install software

Tue, 09 May 2023 06:52:29 -0700

I am trying to reinstall the OS but it will not respond. When I try to connect it to my computer it does not show up but other similar calculators do so I know the cord is good. I have replaced all the batteries.

I get stuck in a loop of "waiting...please install operating system now" and "Error, press any key to turn unit off, then turn unit back on.

Any help would be appreciated.

⟐ Commented May 09, 2023 at 6:52 MST

TI-84 Plus: Screen has black dots on it.

Tue, 18 Apr 2023 08:36:55 -0700

The screen has two black dots that I can’t remove, the calculator works fine so I think it is a screen problem.

The black dots are more clear in person.

⟐ Answer accepted April 18, 2023 at 8:36 MST

TI-84 Plus: Fix battery spring on calculator

Wed, 01 Mar 2023 11:00:07 -0700

I have a calculator that had been working well but the batteries rotted inside. Taking them out one of the springs came undone. Is this fixable?

⟐ Answer edited March 01, 2023 at 11:00 MST

TI-84 Plus: Why is my screen fuzzy?

Tue, 14 Feb 2023 08:42:11 -0700

So, my calculator won't turn on and when it does it displays a fuzzy screen that kind of looks like a bar code or something. Then if I hold alpha and press the on button sometimes it pulls up a menu for a F1-F5 thing. I tried taking the batteries out and just about everything I can think of can you help me

⟐ Commented February 14, 2023 at 8:42 MST

TI-84 Plus: Been charging for over 8 hours, light indicates still charging

Fri, 07 Oct 2022 18:11:13 -0700

So absolute disclaimer; This calculator worked fine in high school for me. However, it’s been around 4 years and as such the calculator has been sitting in a box unused for that time. I’m trying to see if it still works to sell it. At the time I’m posting this it’s been charging with the amber light indicator for 21 hours. Over this time I’ve tried turning it on multiple times with no luck. Should I let it continue to charge until I get a green light or is something wrong?

⟐ Answer accepted October 07, 2022 at 18:11 MST

TI-84 Plus: Vertical Lines Through Numbers

Wed, 01 Jun 2022 12:53:40 -0700

I have vertical lines on the numbers and some of the screens on my TI84 plus. I tried doing a reset, took the batteries out. It only appears when I start typing.

⟐ Commented June 01, 2022 at 12:53 MST