Recently I've experienced a problem with my D80. I press the trigger and the shutter does not activate.
When I half-press the trigger, the camera seems to auto-focus and auto-expose correctly, and it will AE-AF seem to lock correctly too. However when I press all the way, it won't take a picture. (nothing happens at all, no noises, lights or messages)
I've had it happen in program mode, aperture and shutter priority modes, and even full manual (but without the auto-focus lock happening obviously).
The problem seems to be intermittent. Sometimes this happens on the first shot, sometimes after I have taken several shots in a row, using rapid-fire or spaced single shots. I can't determine an obvious pattern.
It doesn't seem to matter what lens I use or whether I am using my flash gun or the on-board flash, or no flash at all.
For reference the camera is set to AF-C, auto-ISO, capturing in full-sized RAW format.
Is the camera finally wearing out or is something else going on? Can anyone point me to links or reference materials? I tried searching SE-Photography, but I didn't find this specific problem.