iFixit - Answers With Device "Calculator"

TI-84 Plus CE: TI-84 Plus CE repeatedly turning on and off when charging.

Tue, 05 May 2026 10:24:16 -0700

My TI-84 Plus CE will repeatedly turn on and off repeatedly in about 1 second intervals while connected to the charging cable, regardless of the power source its connected to (wall outlet, laptop, power brick etc.). It will not turn on at all if not plugged in. I've tried pressing the reset button to no avail. The cable is essentially brand new. This also happened while it should have been at full charge, though it had been about 2 months since it was last fully charged, but it wasn't used in that time until I tried to turn it on recently. I tried taking the battery out and putting back in, and that didn't make a difference either.

⟐ Answer accepted 五月 05, 2026 at 10:24 GMT-7

TI-84 Plus CE: My calculator is not charging or turning on

Tue, 05 May 2026 05:17:27 -0700

Hi, I just got my calculator (TI-84 plus CE) in the mail and it wasn’t turning on so I plugged it in using the USB cable provided that says it’s for “data transfer and convenient charging”. I am worried because the screen is flashing with a message that says “calculator will restart when validation is complete” so it doesn’t seem to be charging. It’s still not turning on and I have no idea what to do, please help. (This calculator doesn’t have a light on the side so I am unable to see if it is charging or what the battery percentage looks like)

⟐ Answer accepted 五月 05, 2026 at 5:17 GMT-7

TI-84 Plus CE: How can I fix my flashing screen (TI-84+CE)

Mon, 04 May 2026 16:15:47 -0700

My calculator seems to have decided to no longer likes me, and is having startup issues.

It is stuck on a flickering white screen. I can’t turn it off. It doesn’t seem to be turning off on its own. I’d prefer to not have to completely wait for it to drain considering that I just finished charging it yesterday. The calculator does not seem to fully load at all and does not appear in the TI Connect CE program when plugged in to the computer. This is my personal calculator and I’d really like to have it fully working again, and if possible, salvage the programs I have on it. Is there anything I can do, short of buying a new calculator? Or is there a factory reset feature available anywhere I can use?

⟐ Commented 五月 04, 2026 at 16:15 GMT-7

TI-84 Plus CE: Why won't my Ti84 Plus CE turn on?

Mon, 04 May 2026 16:04:07 -0700

My calculator will not turn on despite being at full battery (when it charges it has a green light). The screen does not turn on when I press the on button, instead it stays black. I have even bought a replacement battery online, but this did not seem to help. Before, my calculator would often not turn from time to time, but still turned on occasionally, and it always turned on after a few seconds of charging it, but now it does not.

⟐ Commented 五月 04, 2026 at 16:04 GMT-7

TI-84 Plus Silver Edition: What do I do if my calculator screen is cracked?

Wed, 29 Apr 2026 13:12:09 -0700

my screen has cracked and I'm not sure how to fix it or if it needs repair.

⟐ Commented 四月 29, 2026 at 13:12 GMT-7

Casio FX-991ES Plus: My calculator is not turning on

Mon, 27 Apr 2026 14:31:31 -0700

How can i fix it

⟐ Commented 四月 27, 2026 at 14:31 GMT-7

Texas Instruments TI-30X IIS: Automatically adds a digit to the end of my entry

Wed, 22 Apr 2026 13:20:25 -0700

My calculator automatically adds a 9 to my last number every time I try to do math. For example, I type 5 + 6 and expect =11, but calculator does 5 + 69 and I get =74 :(

The 9 button does not appear to be sticky.

⟐ Commented 四月 22, 2026 at 13:20 GMT-7

Casio fx-580VNX: Calculator has a malfunctioning button

Fri, 17 Apr 2026 03:40:29 -0700

What's wrong with my Casio calculator? I was using it for normal calculations when I noticed about 5-6 buttons stopped working. Is there any way to fix this?

Casio fx-82ES: How to change display

Thu, 16 Apr 2026 01:29:25 -0700

How to change display

⟐ Answered 四月 16, 2026 at 1:29 GMT-7

Casio FX-991EX: Calculator is in 'PAUSE' mode

Tue, 14 Apr 2026 23:17:51 -0700

The calculation was done in VECTOR mode from the menu. When trying to do something, the calculator hangs, after clearing by the 'ON' button, you can see this status of MENU. Apart from these 3 modes, no other mode is showing, if I want to scroll up or down, the pause sign (2nd picture) is coming on the upper right side.

⁉️ How to get back all mods like before?

⟐ Commented 四月 14, 2026 at 23:17 GMT-7

Texas Instruments TI-30 XS Multiview: Calculator turns off while typing and won't turn on unless I reset

Thu, 09 Apr 2026 14:34:27 -0700

The device turns off while typing and won't turn on unless I reset, clearing out the work. It still calculates after I try a few times but I lose a lot of time typing it in over and over again.

⟐ Answered 四月 09, 2026 at 14:34 GMT-7

Casio fx-82ES: How to write A to Z alpabats in casio fx-82es plus

Tue, 07 Apr 2026 05:25:28 -0700

How to write English lettes in fx-82es plus

⟐ Answered 四月 07, 2026 at 5:25 GMT-7

Casio fx-CP400: Touch screen not responding, and when it does it presses wrong things

Fri, 03 Apr 2026 04:40:45 -0700

Touch screen will not work but the little times it does it just presses a button on the opposite side of the screen. Screen has no cracks or scratches. Never been dropped hard or anything. Resetting the calculator does not fix it and now i can't use the calculator since i am stuck in the language option screen. Please help and thank you!

⟐ Answer edited 四月 03, 2026 at 4:40 GMT-7

Casio FX-991ES Plus: Not working. No display. Better also changed. what should I do?

Mon, 23 Mar 2026 03:47:59 -0700

My Casio fx991 es plus calc not working what should I do? No display battery also changed. Advise me please.

⟐ Answered 三月 23, 2026 at 3:47 GMT-7

Sharp EL-1197P calculator: Calculator stuck in "On" Position

Fri, 20 Mar 2026 03:38:55 -0700

I took apart a Sharp EL-1197P calculator and cleaned contacts with 91% isopropyl alcohol. When I reassembled it and plugged it back in the power switch was set to off but still turned on. I flipped it back and forth still nothing. Please help!

⟐ Commented 三月 20, 2026 at 3:38 GMT-7

Casio fx-82ES: Why does my calculator not turn on when I press the on button

Thu, 19 Mar 2026 21:24:41 -0700

Why does my calculator not turn on when I press the on button

⟐ Commented 三月 19, 2026 at 21:24 GMT-7

Texas Instruments TI-83: Why TI-83 wont turn on

Thu, 26 Feb 2026 06:46:07 -0700

Hi.

I'm having a problem with my TI-83, it doesnt turn on.

I have replace the batteries, the 4 AAA and the

backup one, and followed all the hints supplyed in TI,

troubleshouting section.

It still doesn turn on.

What can I do?

⟐ Commented 二月 26, 2026 at 6:46 GMT-7

Other Brand Calculator: Check button is not work

Fri, 20 Feb 2026 21:49:35 -0700

Check button is not working

⟐ Commented 二月 20, 2026 at 21:49 GMT-7

CASIO fx-82AU PLUS II NNATURAL-V.P.A.M.: Why is my 0 not working?

Fri, 20 Feb 2026 09:54:29 -0700

Why is my 0 not working?

TI-89 Titanium: screen ends up freezing after I use it for a while

Wed, 11 Feb 2026 09:27:30 -0700

When I use it for some time, the screen ends up freezing, and the only buttons that work are 2nd, Diamond, Alpha, and copy