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Casio Scientific Calculator fx-580MS, Hobbies & Toys, Stationery & Craft, Stationery & School Supplies on Carousell
![Hello! My casio calculator has this stain-like thing in its screen. It suddenly appeared on a random day. Does someone know what this is and what happened? Is it possible for me Hello! My casio calculator has this stain-like thing in its screen. It suddenly appeared on a random day. Does someone know what this is and what happened? Is it possible for me](https://preview.redd.it/hee7bgjl4ls71.jpg?width=640&crop=smart&auto=webp&s=74bafc730b54eb4a7b036ec33051d6c251266526)
Hello! My casio calculator has this stain-like thing in its screen. It suddenly appeared on a random day. Does someone know what this is and what happened? Is it possible for me
![Amazon.com : Casio fx-9750GII Graphing Calculator, Yellow : Graphing Office Calculators : Office Products Amazon.com : Casio fx-9750GII Graphing Calculator, Yellow : Graphing Office Calculators : Office Products](https://m.media-amazon.com/images/W/IMAGERENDERING_521856-T2/images/I/71Gft5-iyOL._CR0,204,1224,1224_UX256.jpg)