Casio fx 991 ES calculator opening back cover and cleaning.

[@_aidid]

You need not open a calculator and clean it this way; dusts do not collect inside such calculators.

[@antonmaier2263]

Is there a quartz on the calculator?

[@GenesisRussell-jt2rp]

my american version of the same calculator has plastic rivets (instead of screws) holding the motherboard on. =[

[@phatsitearth7215]

is there a way to open it? or it cant be?

[@md.habibhussen1619]

Amar casieo 991 es calculator off korle on hoy na. Battery khule lagale on hoy aumatic vabe.a problem kivabe solve korbo please janaben

[@durreshehwarzaeem4905]

My Calculator fell on the ground, now it fluctuates whenever I am typing something how do I repair it

[@Noir_Wave]

Not interested

[@Sonria70]

it's not cashio (nuts). it's Casio.

[@bhaavanimavuri498]

My calculator fell into water. How can it be repaired

[@randomguy4738]

buy a new one? calculators are really cheap

[@smitias_8474]

@@randomguy4738 I wouldn't agree. Simple ones ("like on your phone" level) - yeah, sure. But more advanced models (which unlike simple ones, actually useful outside a classroom) can go well over a 100$.

[@llarc5889]

light it on fire. that totally works

[@llarc5889]

To be honest I think you should let it dry. As long as you have not used it after it has been dropped, you should remove the battery carefully and let it dry, then insert the battery again.

[@randomguy4738]

@@smitias_8474 If you're going to use an advanced calculator then just search one up online. And don't even start with the money bullshit. People sell pens for 100 dollars.

[@viratbamne4873]

On ki batan kharb ho gai h kaise thik kare