Question about Sharp EL-501WBBK Scientific Calculator, 10-Digit LCD
If calculator uses batteries, change the batteries. If it uses solar polar, expose it to direct sunlight or a powerful artificial light (lamp).
Also , in the Mode or Setup menu look for a contrast setting procedure. If nothing works, just buy another calculator and retire this one to the museum of calculators.
Posted on Nov 24, 2013
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Posted on Jan 02, 2017
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