Nikon D90 mirror stuck

  • Suddenly, while taking photos my Nikon D90 turned black and I couldn't see anything through the viewfinder, the result of a locked up mirror as I found out when taking off the lens. The camera display unit does not work either.

    What can I do to fix this problem?

    Just experienced that error and it gave me quite a scare. Information on the Internet eventually led me to solve the problem but it was scattered among various pages, so here in a more compact form.

  • Stockfisch

    Stockfisch Correct answer

    5 years ago

    It may be the result of a battery going dead without prior warning. This happened to me using a third party battery pack.

    In order to fix this replace the battery pack with a charged one (preferably a Nikon battery). Turning the camera on will likely result in the "Err" message being displayed. Simply press down the shutter and the mirror should move into its correct position again.

    This is the problem with my battery. Is there a way to fix it or I should just replace it?

    For me it worked removing the battery pack and replacing it with a charged one (or recharge the empty one). If your battery doesn't work properly anymore I'd replace it.

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Content dated before 7/24/2021 11:53 AM