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Replace the screen
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There are many replacement screens available. You need to find a common cathode two digit (sometimes called two bit) 7 segment 0.4 inch display with white LEDs (LED colour is probably not important)
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0.4 inches refers to the short edge of the display
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I found this one: https://www.aliexpress.com/item/10050085...
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Which is ~£1 for 5 of them
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Make sure it's got 10 pins - 5 on each side
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