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My casio fx-CG 20 is very dim even when there is plenty of battery and the brightness is full too. Pls help i have a test tmr : r/calculators
![Casio FX-CG-50-L-IH [10/18] Display Brightness and Battery Life](https://mans.io/views2/3189505/page10/bga.png "Casio FX-CG-50-L-IH [10/18] Display Brightness and Battery Life")