The TI-30XS is a scientific calculator made by Texas Instruments. It can perform trigonometric functions, store up to seven variables, and has three viewing modes.

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Why are the characters so faint?

I am trying to do a calculation, but the characters on the display are very hard to see.

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The screen could be the problem. Faulty wiring to the display may make the characters appear too faintly. I would recommend looking at the Screen Replacement Guide.

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New battery pretty sure you need a button battery

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