iFixit - Answers With Device "Texas Instruments Calculators"

Texas Instruments TI-83 Plus: Why Do I have to put preasure on the screen?

Tue, 15 Jul 2025 21:31:32 -0700

I have to put pressure on the screen for the pixels not to be super dim to the point of barely being seen.

⟐ Answered juli 15, 2025 at 21:31 MST

Texas Instruments TI-Nspire CX: Why isn’t my ti-nspire turning on

Sun, 06 Apr 2025 04:35:01 -0700

My nspire had low battery and when I went to charge it it wouldn’t charge and so it shutdown but when I got a spare battery the device still won’t turn on or at the very least the display doesn’t work. I tried both the spare and the original battery on a different device and both worked for that device

⟐ Commented april 06, 2025 at 4:35 MST

TI-84 Plus Silver Edition: Only 1 graph for 2 Inputs?

Thu, 05 Dec 2024 14:39:20 -0700

So I have two inputs put into my (Y=) values and both of the equal signs are "highlighted". Then when I go into the graph, only one equation shows up. Yes they are 2 different equations, one is a cubic and the other is a quadratic so they should look totally different. If I go to the table menu after viewing the graph, only 1 set of values appears and if I go back to the (Y=) menu, the Y2 equal sign isn't "highlighted" anymore either. Bottom line is that no matter what, only one equation shows up on the graph.

⟐ Answered december 05, 2024 at 14:39 MST

TI-84 Plus CE: What is an acceptable battery voltage?

Tue, 12 Nov 2024 15:27:16 -0700

I know the TI-84 Plus CE has a 3.7V battery. It wasn't turning on so I checked the voltage using a multimeter and got 3.4V. I thought this was enough to power the calculator but after a good night on the charger it worked. This confuses me, so I was hoping someone smarter than me could explain this? Is there a general rule of thumb/threshhold for hpw low a bettery can be before it needs replaced/charged? Thanks!

⟐ Commented november 12, 2024 at 15:27 MST

Texas Instruments TI-82: Screen fading. What do I do?

Wed, 23 Oct 2024 20:27:38 -0700

There is a line down the right side that cuts the answer off. How can I fix it?

⟐ Answered oktober 23, 2024 at 20:27 MST

Texas Instruments TI-82: buttons for 7, 8,9 not working

Fri, 26 Jul 2024 09:00:09 -0700

everything else seems to be working except for the 7, 8, 9 number buttons. Any chance of repair?

⟐ Answered juli 26, 2024 at 9:00 MST

Texas Instruments TI-30X IIS: How to repair non-functioning buttons?

Thu, 09 May 2024 15:11:39 -0700

4-6 keys are not working. Every other button on the calculator works though.

⟐ Commented mei 09, 2024 at 15:11 MST

Texas Instruments TI-Nspire CX II: Why is the os not found?

Tue, 23 Apr 2024 06:00:23 -0700

So one day, I was turning on my calculator after a while, and it will not load. The progress bar gets to the half-way point, then stops and says that the os is not found. I have not done any messing with the code.

⟐ Answered april 23, 2024 at 6:00 MST

Texas Instruments TI BA II Plus: On finding NPV and pressing CPT button,it automatically switches off.

Mon, 11 Dec 2023 22:25:12 -0700

Whenever I calculated NPV,the calculator switches off itself. And then after 5 min it automatically become rst.

Please suggest me something.

⟐ Commented december 11, 2023 at 22:25 MST

TI-84 Plus CE: Is there any way to change or repair the ribbon cable?

Mon, 04 Dec 2023 17:49:13 -0700

My screen has white vertical lines and is lacking of colour intensity everywhere. I already did the self diagnostic test, restarted it, reinstalled the os. I really think there is a problem with the flex cable. On ti 83 calculators it was possible to solder cables to replace the ribbon cable, is it possible on ti 84 plus ce?

⟐ Commented december 04, 2023 at 17:49 MST

Texas Instruments TI-Nspire CX: Nothing showing on the screen?

Fri, 18 Nov 2022 19:03:24 -0700

Hi! I have a TI-Nspire CX calculator, and now my calculator can’t turn on the screen. It’s broken maybe is because I am trying to upgrade the calculator to a TI-Nspire CX CAS calculator.

⟐ Answered november 18, 2022 at 19:03 MST

TI-Nspire: I have a TI Nspire in one of my classrooms that will not turn on.

Tue, 15 Nov 2022 09:21:57 -0700

I have connected it to a working calculator and attempted to turn it on that way. I know there is a way to push a sequence of buttons to reset it, but I cannot find what they are. Does anyone know how to do this?

⟐ Answered november 15, 2022 at 9:21 MST

Texas Instruments Calculators: Ti 84 Plus CE GDC screen says PLEASE INSTALL OPERATING SYSTEM NOW

Tue, 28 Jun 2022 05:16:27 -0700

I bought aa Ti84 Plus CE graphing calculator in the US a month ago.

Its OS got deleted. How to get new OS?

⟐ Answered juni 28, 2022 at 5:16 MST

TI-89 Titanium: missing horizontal pixels on display screen

Thu, 01 Jul 2021 09:17:56 -0700

I have two missing horizontal lines of pixels. The first is just below the tool bar and the second is almost half way down the screen. I ran the self test for the calculator and confirmed that the lines were missing. Is this a hardware problem or software problem. How can I determine which it is. If it is a software problem will a reset fix it without removing the factory installed programs. But if it is a hardware problem would this be an easy fix.

⟐ Answered juli 01, 2021 at 9:17 MST

TI-84 Plus CE: Why does my TI-84 Plus CE graphing calculator die fast?

Fri, 23 Apr 2021 13:20:25 -0700

When charging, the battery indicator on the screen stays the same at about 3/4 of the rectangle. I left it for about 5 hours and it still isn’t fully charged. When I unplug it to use it for 5 minutes, the calculator battery instantly drops to about 1/4 of the rectangle.

⟐ Answered april 23, 2021 at 13:20 MST

TI-84 Plus CE: lcd screen is cracked---can it be replaced?

Sun, 07 Mar 2021 16:35:55 -0700

i accidentally dropped my TI84+CE and a portion of the LCD screen is dark when I turn it on. Overall, the calculator still functions fine, but that sliver of the screen doesn’t display anything. It appears that the LCD screen is cracked. Can one purchase and replace just the LCD screen?

⟐ Commented maart 07, 2021 at 16:35 MST

TI-84 Plus CE: My screen has liquid in it.

Tue, 10 Nov 2020 09:36:38 -0700

So I have a TI-84 Plus CE that was sitting on my desk, and a closed container of isopropyl alcohol fell onto it. I didn’t think anything of it. Now, I noticed (it’s been a couple of days) that my TI had white residue all over the bezel. And to my horror upon turning it on, the entire polarizer is soaked and the screen is extremely dim. What do I do?

⟐ Answered november 10, 2020 at 9:36 MST

TI-84 Plus: it is not powering up

Sat, 04 Apr 2020 20:23:48 -0700

does not come on when on button is engaged

⟐ Answer accepted april 04, 2020 at 20:23 MST

Texas Instruments TI-83 Plus: New Batteries, TI-83 will not turn on No Pixels

Sat, 28 Mar 2020 23:02:06 -0700

TI-83 has fully charged AAA bastteries. Will not turn on. No pixels. Where is the location of the neared TI Repair center located in Tucson AQrizona. Please advise as soon as possible. Thanks in advance.

⟐ Marked as duplicate maart 28, 2020 at 23:02 MST

Texas Instruments TI-83 Plus: New Batteries, TI-83 will not turn on

Sat, 28 Mar 2020 23:02:06 -0700

TI-83 Plus will not turn on when new batteries have been inserted. No corossion, Batteries all at 1.54 volts. What is wrong and can it be repaired?

⟐ Marked as duplicate maart 28, 2020 at 23:02 MST