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I have a Nikon D40x that has been working fine for over 5 years now. It just recently quit on me with the error message "Press Shutter Release Button Again".. I have cleaned and lubricated the red shutter wheel on the bottom of the camera and it will work for a few test shots then quit again. Please I need help!

I have read some articles that lightly mention something about a mirror problem but I have no idea what to search for. If someone can provide a more specific article on mirror problems that would be great! Or any other ideas! Thank you

  • Send it to Nikon for repair. The work that they do is excellent. – Mark Aug 5 '14 at 12:13
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I had the same problem during a trip. I lubricated the red shutter wheel with WD40. You have to roll the wheel and try to use as little as possible WD40. Since then (4 years ago) my D40 is working perfect with hundreds of shots. Of course, there is a possibility that the above solution might not work.

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