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How to Repair Damaged Keys If you have a key or two that don't function, it can be frustrating to type. Fortunately, if you own a spare key from the same keyboard or an equivalent one you can repair it without having to buy an entirely new keyboard. Start by examining the problem. Look for any foreign materials that might block the key or hindering its work properly. Keycaps damaged If you're a passionate keyboard user, chances are that at one time or another, you've required the removal of a key