Why does the backup camera not show sometimes?

Sometimes the backup camera does not show, the screen turns black. Is there anyone who can help with this issue or do you know a master? I'm sitting on the side of ist and

There may be a lack of contact or if it is getting water, it may be making a chassis. You can go to any electrician, at least they will check it.

Usually the problem is with the sockets. or because they are triggered by the reversing lamp, there may be such problems when the connection is not correct.