![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 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](https://preview.redd.it/87w0gbamzew31.jpg?auto=webp&s=a79de099a70b6df7f9de8a44fe0e9e177c947bb9)
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
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