![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://i.redd.it/87w0gbamzew31.jpg)
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
![Amazon.com: CASIO PRIZM FX-CG50 Color Graphing Calculator,Black & White,7.21"Wx10.32"Lx2.05"H : Clothing, Shoes & Jewelry Amazon.com: CASIO PRIZM FX-CG50 Color Graphing Calculator,Black & White,7.21"Wx10.32"Lx2.05"H : Clothing, Shoes & Jewelry](https://m.media-amazon.com/images/I/71Jvd1EWeeL._AC_UF894,1000_QL80_.jpg)
Amazon.com: CASIO PRIZM FX-CG50 Color Graphing Calculator,Black & White,7.21"Wx10.32"Lx2.05"H : Clothing, Shoes & Jewelry
![The very first Graphing Calculator with a Color Display – CASIO CFX 9850 Review — Wenting's Web Page The very first Graphing Calculator with a Color Display – CASIO CFX 9850 Review — Wenting's Web Page](https://www.zephray.me/uploads/blog/2013/1508867510756-dsc9412.jpg)