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Casio fx-CG20 screen is (almost) black

cg20 black

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#1 Buin



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Posted 04 December 2017 - 06:54 PM

The screen of my cg20 is (almost) black. If you shine a flashlight on the screen you can see it's on.

I tried every backlight levels from 1 - 5

I changed batteries

I did a total reset.

The calculator is 3 months old


What else can I do?


#2 TheAwesomer



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Posted 24 January 2019 - 08:00 PM

Have you tried opening it up and applying pressure to the ribbon cable attached to the board and the screen (apply pressure to the bit of it attached to the board and then to the screen) and seeing if the screen changes whilst doing that?

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