iFixit - Answers With Device "Casio Calculator"

Casio FX-991ES Plus: por que no me funciona el botón?

Fri, 31 May 2024 09:14:47 -0700

el botón cero y el botón de igual me fallan y tengo que picarle fuerte para que funcione, limpie el botón de igual y lo mejoro pero no funciono con el botón cero

⟐ Answered mayo 31, 2024 at 9:14 GMT-7

Casio Calculator: Mi calculadora Casio DR-120TM no enciende

Tue, 20 Jan 2026 11:17:55 -0700

Tengo una calculadora DR-120TM, la cual ya le probé la fuente de alimentación y los voltajes están bien creo ya que no tengo diagrama esquemático, los componentes ya los revise y están bien lo único que no podido revisar es el micro el cual es de gota, alguien me podría ayudar con el diagrama o información sobre este fallo por favor .

Casio FX-991ES Plus: Las teclas laterales funcionan como shift y no como numeros

Mon, 01 May 2023 06:04:57 -0700

Cuando pulso las teclas de la parte del extermo izquierda en vez de pulsar 7 0 4 funciona como shift

Casio FX-991EX: Como quitar la placa para limpiar botones

Thu, 23 Mar 2023 08:52:42 -0700

Los botones de la calculadora se pegan cuando los oprimino y no puedo quitar la placa para revisar y limpiar.

Casio FX-991ES Plus: Por qué no enciende

Sat, 30 Jul 2022 22:28:03 -0700

Se le reventó la pila a mi calculadora y ahora no enciende, que puedo hacer

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 marzo 23, 2026 at 3:47 GMT-7

Casio FX-991ES Plus: How to repair the display

Tue, 08 Apr 2025 23:29:40 -0700

How to repair the display of a Casio FX-991ES Plus Calculator

⟐ Commented abril 08, 2025 at 23:29 GMT-7

casio fx-991es plus: LCD has blotch after I dropped my calculator. Can this be fixed?

Fri, 16 Dec 2022 04:22:43 -0700

I dropped my calculator the other night and some faint cracks and a blue blotch runs vertical across the lcd. It still works but the numbers where the blue blotch is can't be seen. Can I fix this somehow? Or is it possible to have the lcd replaced?

⟐ Commented diciembre 16, 2022 at 4:22 GMT-7

Casio FX-991ES Plus: How do I fix my calculator that only runs on solar power?

Sat, 23 Mar 2024 18:15:54 -0700

My Casio fx-991ES PLUS was dropped and now the display does not light up unless it is under a light source. It has a mini solar panel which I assume it using for power and it has new batteries in it but they do not seem to work. Is there something I can do to fix it?

⟐ Commented marzo 23, 2024 at 18:15 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 abril 14, 2026 at 23:17 GMT-7

Casio fx-82ES: How to remove f(x) always showing it

Wed, 29 May 2024 14:23:13 -0700

in my calculator i cant find any answers because it is always showing f(x) in it

in my calculator i cant find any answers because it is always showing f(x) in the screen.how can i remove it?please give an appropriate solution for this

⟐ Commented mayo 29, 2024 at 14:23 GMT-7

Casio FX-991ES Plus: Facing Problem on my calculator

Sun, 01 Jun 2025 23:52:08 -0700

My calculator is fully reversed. The number is reversed. Everything is rotated into 90 degree. How can i fix this problem?

⟐ Answered junio 01, 2025 at 23:52 GMT-7

Casio FX-115MS: Why is my screen black?

Wed, 14 Oct 2020 01:24:16 -0700

I turn on my calculator and the screen is completely black.

⟐ Answered octubre 14, 2020 at 1:24 GMT-7

Casio fx-82ES: Why does each answer equal 0?

Thu, 16 Mar 2017 16:59:55 -0700

My calculator answers each question as 0 and true or false.

For example if I do 2+2 it says that equals 0

and has the word false underneath it in capital letters.

⟐ Answered marzo 16, 2017 at 16:59 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 abril 07, 2026 at 5:25 GMT-7

Casio fx-82MS: No display. I'm trying to turn it on but it isn't working. What to do?

Thu, 25 Jul 2019 07:36:34 -0700

I'm trying to turn my calculator on, but it isn't working. How do I fix it?

Model - CASIO fx-82MS

⟐ Answered julio 25, 2019 at 7:36 GMT-7

Casio fx-82ES: Why is my calculator showing a decimal as the answer?

Sat, 27 May 2023 10:52:56 -0700

Whenever I use my calculator, and do an equation, for an example, 2+2. It would always give a decimal as the answer when clearly it is not. For 2+2, it says 4.0 instead of 4. For 9.2+1.2, it says 1.0 instead of 10.4. I really don't know what to do because I have finals coming up soon.

⟐ Answered mayo 27, 2023 at 10:52 GMT-7

Casio fx-9750GII: Why is my calculator screen faded/black?

Wed, 15 Feb 2023 17:51:14 -0700

I don’t use my calculator often, but I always keep it in my backpack. I pulled it out one day and noticed that my screen was faded/dark, and I have to click a button multiple times for it to work. Is my calculator broken? Is there a way to fix it?

⟐ Commented febrero 15, 2023 at 17:51 GMT-7

Casio FX-991ES Plus: How to fix calculator suddenly goes off after calculation

Sun, 14 Sep 2025 05:15:30 -0700

As soon as I type any question and then press equal to it will give me the answer but it will suddenly go off in 5 seconds

⟐ Commented septiembre 14, 2025 at 5:15 GMT-7

Casio FX-991EX: keypad does not work properly

Tue, 05 Aug 2025 03:58:29 -0700

key 2 and key 1 both work as 1
key 4 and key 5 both work as 4
key 7 and key 8 both work as 7
key STO and key ENG both work as STO
key ((-)) and key (.,") both work as ((-))
key STO and key ENG both work as ENG

⟐ Answered agosto 05, 2025 at 3:58 GMT-7