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in dark place cannot see display

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Htoo Tint Tint Kyi

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asked by Htoo Tint Tint Kyi

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Facing Problem on my calculator

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jayeff 521.3k

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edited by jayeff

Casio FX-991ES Plus
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Why screen are suddenly off and turn on?

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Moshiur Rahman

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asked by Moshiur Rahman

Casio FX-991ES Plus
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How to fix the calculator that failed down and doesn't wanna open agai

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Nérondouba sointar Israël

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asked by Nérondouba sointar Israël

Casio FX-991ES Plus
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Calculator not working properly

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Muhammad Hunain

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asked by Muhammad Hunain

Casio FX-991ES Plus
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started working like that of Casio 115 ES plus.

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oldturkey03 835.9k

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edited by oldturkey03

Casio FX-991ES Plus
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My Calculator's [AC] & [-] buttons aren't working properly

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Zachariah Orton 525

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commented by Zachariah Orton

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calculator is switching off despite I changed the cells

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1 1

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asked by 1 1

Casio FX-991ES Plus
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Why is the on button not working?

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Adeleke Habeebullah

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asked by Adeleke Habeebullah

Casio FX-991ES Plus
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Closes automatically after 3 sec. Even after replacing my battery.

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Tanveer Hasanwale

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asked by Tanveer Hasanwale

Casio FX-991ES Plus
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How to get display brighter and clear which is very light not visible

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Syed Sana

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asked by Syed Sana

Casio FX-991ES Plus
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Why is my calculator not working?

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amatsuda 477

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commented by amatsuda

Casio FX-991ES Plus
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cursor is not moving left and right

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usama anjum

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asked by usama anjum

Casio FX-991ES Plus
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My equal(=), Ans and dot (.) button doesn't work. They show 0.

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Duane Donaldson 871

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commented by Duane Donaldson

Casio FX-991ES Plus
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Shift Solve not working

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Animesh Sinha

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asked by Animesh Sinha

Casio FX-991ES Plus
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Casio fx-991ES PLUS keys 1,4 and 7

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gautam kumar

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asked by gautam kumar

Casio FX-991ES Plus
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My calculators mode setup options is not visible what should I do?

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Sanjana Hs

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asked by Sanjana Hs

Casio FX-991ES Plus
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How to tighten the case lock of my casio calculator?

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thecmdmaker

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asked by thecmdmaker

Casio FX-991ES Plus
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no buttons are working

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[deleted] 27.5k

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commented by [deleted]

Casio FX-991ES Plus
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The printing on the keys is disappearing (FX115ES-PLUS/FX991ES-PLUS)

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Yuval Steuer

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asked by Yuval Steuer