Broken Mamiya 7 150mm lens

[Tadhgo]

Just wondering if anyone knows whats wrong with my 150mm lens for my mamiya 7?

When I press the shutter release it takes about 1 second till I hear a click and the lens seems to jam. The photos come out blank.

 

[oftheherd]

Never had a Mamiya 7 in my hand. What you are looking at could be a rangefinder cam lever or an aperture setting or sensing lever. Or not. But if it is jamming, that could be confusing the electronics of your camera. There are other users of your camera. Hopefully one of them will know.