Adding on what TheYootx Media Group said, another possible issue is the contrast was turned down too far. You can easily fix this by (make sure the calculator is turned on) repeatedly pressing [2nd] then the up arrow until you can see the display again. If this doesn’t work then it’s either a battery issue or a display issue. If there’s a display issue, then [https://www.cemetech.net/forum/viewtopic.php?t=5161&start=0|this article] may help you repair it.
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Adding onto what TheYootx Media Group said, another possible issue is the contrast was turned down too far. You can easily fix this by (make sure the calculator is turned on) repeatedly pressing [2nd] then the up arrow until you can see the display again. If this doesn’t work then it’s either a battery issue or a display issue. If there’s a display issue, then [https://www.cemetech.net/forum/viewtopic.php?t=5161&start=0|this article] may help you repair it.
Adding on what TheYootx Media Group said, another possible issue is the contrast was turned down too far. You can easily fix this by (make sure the calculator is turned on) repeatedly pressing [2nd] then the up arrow until you can see the display again. If this doesn’t work then it’s either a battery issue or a display issue. If there’s a display issue, then [https://www.cemetech.net/forum/viewtopic.php?t=5161&start=0|this article] may help you repair it.