Why is my screen black?
I turn on my calculator and the screen is completely black.
Scientific Casio Calculator released August 2000. Identified by the model name FX-115MS
There could be two problems that are causing this to happen regarding this question.
The first one is that the calculator might be on high contrast and that is on the troubleshooting page, and here is the link for it that shows how it could be fixed.
The second problem might be because of a broken screen, and here is the link for it that shows how to fix it in the troubleshooting page.