How do I fix a flashing seven-segment display in a 2006 Honda Civic LX

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My 2006 Honda Civic LX has a digital seven-segment display with three displays for the speedometer, but the top segment in at least two of the three are either flashing, dim, or completely off, changing between the three states randomly. I only know about the two displays to the right as I have never gone above 99 mph and used the third display. Is there a way to fix this, or will it have to be replaced.