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<blockquote data-quote="hark" data-source="post: 765183" data-attributes="member: 13196">Are you able to put the body into Mirror Up and look inside? Check to see if the shutter is visible (which it shouldn't be). Most likely the mirror is sticking.When my issue happened repeatedly with my first D750, I mentioned it here but never received any responses from anyone else who was experiencing this same problem. After searching online, I read one account of someone with the same thing happening. He sent his into Nikon where they replaced the shutter. Yet when he got it back, the same issue kept happening. He began to insist that Nikon replace the CPU. After back and forth with Nikon, the CPU was finally replaced which resolved his issue.So it sounds like either the mirror is sticking, or it might be a CPU issue. Can you try just putting it into mirror up over and over? If it sticks, then something is probably going on with the mirror mechanism. If the mirror goes up and releases properly, then it could be something with the CPU. Alternatively you could put the body into Live View. That will also flip the mirror up. Press the shutter a few times to see if the shutter clicks properly.</blockquote>

[QUOTE="hark, post: 765183, member: 13196"] Are you able to put the body into Mirror Up and look inside? Check to see if the shutter is visible (which it shouldn't be). Most likely the mirror is sticking. When my issue happened repeatedly with my first D750, I mentioned it here but never received any responses from anyone else who was experiencing this same problem. After searching online, I read one account of someone with the same thing happening. He sent his into Nikon where they replaced the shutter. Yet when he got it back, the same issue kept happening. He began to insist that Nikon replace the CPU. After back and forth with Nikon, the CPU was finally replaced which resolved his issue. So it sounds like either the mirror is sticking, or it might be a CPU issue. Can you try just putting it into mirror up over and over? If it sticks, then something is probably going on with the mirror mechanism. If the mirror goes up and releases properly, then it could be something with the CPU. Alternatively you could put the body into Live View. That will also flip the mirror up. Press the shutter a few times to see if the shutter clicks properly. [/QUOTE]

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