Call Nikon. Most of the time they can walk you throgh the fix
Hey Alex--
I just read back through this conversation. Somewhere along the way, the notion of a battery grip got injected into the discussion (and I picked right up on it). I don't now see anywhere that you indicated you are using a battery grip. Can you verify whether or not you are? And I agree with calling Nikon. These cameras are incredibly complex. Mine had to go back at the end of last year for a problem with a viewfinder mask that wouldn't clear. Plus, I've noticed that it seems to me that the buttons on the back of the camera don't all have the same "feel" that I've become accustomed to. In particular, my AF Lock button was really "loosey goosey" when the camera was new, but seems much less so now that it has come back from repair.
With others having noticed that removing the battery, grip, cycling on-off etc helps, perhaps cleaning the contacts on the battery and battery compartment might be tried? Can't hurt. I use it on a cotton swab.
This may seem simple, but is the green light flashing when you experienced the problem?
alexskoz wrote:
I have no battery grip!
I'd suggest talking to Nikon. Fixing my D850 required replacement of a flexible circuit board (ribbon cable, I think), and a couple of other components. My problem was consistent, not intermittent. But the rep at repair center was very helpful and did not seem at all shocked at what I was experiencing. Identifying and fixing an intermittent problem may be a little more challenging, but certainly should not be impossible if you provide a good description of the problem.
Be aware, though, that in my case the repair took a while to complete. I feel certain that the reason was a wait for parts from Japan.
The problem I was having was not a fatal one...I could have lived with it for quite a while. But I'm so glad it's resolved now and the camera is 100%.
Thank You so much! I'm calling Nikon now!
I had a very similar problem to this with a D5600. In essence the problem was caused by the rubber eyecup. I had taken one from a D3100 which is ever so slightly different to the one I should have been using. That slight difference was enough to block (sometimes) the sensor that detects whether your eye is up at the viewfinder. So sometimes the camera would think my eye was up at the eyecup and would subsequently turn off the rear LCD display. I removed the eyecup and problem solved.
I suggest you try that. It may not be the problem but it's a cheap and easy fix if it is.
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