Why is my camera lens showing black and purple lines?

The camera turns on just fine, but when I look at the screen it shows up as either fully black or a very distorted purple image

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crwdns2934109:0crwdne2934109:0

crwdns2889612:0crwdne2889612:0 0
crwdns2934285:0crwdne2934285:0