iFixit - Answers With Device "Casio fx-9750GII"

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 February 15, 2023 at 17:51 MST

Casio fx-9750GII: Why are my function keys not working properly?

Wed, 30 Nov 2022 04:41:24 -0700

My function keys are not working properly.

In Run-Math program, if I press F1, nothing happens. If I press F2, it opens a list of options in the botton (LIST, MAT, CPLX, CALC, STAT). If I press F3 it opens another list of options (V-WIN, FACT, STAT, GRPH, DYNA). If I press F4, it acts as going into the previous screen (For example, If I am in Run-math and I was in the menu before, it goes to the menu and if I press it again it goes back to the Run-math). F5 acts as the Left arrow key in text editors. F6 acts as moving back a line (selecting the previous line).

Every other button work as intended.

I tried to reset the system through the menu, but since the function keys aren’t working properly, I can’t select the reset option. I’ve also tried the small button on the back of the calculator, but it doesn’t do much.

⟐ Answer edited November 30, 2022 at 4:41 MST

Casio fx-9750GII: Why my calculator is stuck in the main menu?

Thu, 18 May 2023 09:42:20 -0700

I just replaced the batteries for new ones, when I tried to turn it on: it appeared the main menu and now it’s stuck there. I’ve already tried resetting it, took out the batteries and put them back again, I’ve also tried to use the F2+4+Ac/on+RESET, and then press 9 and x, and still nothing happened.

It’s literally stuck on the main menu like the picture I’ve attached.

Please help.

⟐ Commented May 18, 2023 at 9:42 MST

Casio fx-9750GII: shift and alpha button completely different functions now.

Sun, 01 Oct 2023 13:38:11 -0700

Hello

My shift and alpha button work, but have completely different functions now. I tried rest to my it but didn’t work. Please help.

I’m using Casio fx9750gii

⟐ Commented October 01, 2023 at 13:38 MST

Casio fx-9750GII: I can't click right.

Mon, 19 Feb 2024 12:12:16 -0700

I've checked every button. They all work except the right button on the circle of arrow keys. I opened it up and couldn't find anything obviously wrong but I'm not an engineer by any means and would love some help. The keypad looks fine and not worn down. The carbon contact doesn't look worn down, maybe a little dusty. I rubbed it over with an unused toothbrush but it didn't help.

Any ideas?