Thank you for all of the thoughts, impute, and advice!!
I apologize for my late response.
Thank you for the links @buddingphotographer! That is exactly what a D90 looks like on the inside.😂 I will try to let you know if/when I get the camera up and working.
@jamesstaddon I am new to diagnosing camera problems and working on them, but I think @cheesestick gave a good explanation of how the aperture leaver is supposed to work.
@cheesestick, the lens does work on a different body, so I’m not sure what to think, except that in my inexperienced I probably did something to the camera with the lens on it and caused the damage myself.
Oh, by disassembled the camera I meant almost total disassembly…
