it happen in my test that automatic cocking mechanism failed to cock the shutter, maybe 20% failure rate, so it worth to double check if something has gone wrong or not.
The problem can be caused by several things:
- lens issue. All shutter should be triggered when cocking lever reach spesific position (around 4 o'clock position). If you have other lenses, better try to swap the lens module to make sure the issue is lens related or body related. Lens cocking lever should have restriction, but should be light enough (you can feel it when you wind the film).
- there are small gaps on the camera hole for the lens, the lens installed can wiggle for a reason (dropped, cocking lever is hard to move) into a position so the body coupling movement is just "almost" cocking the lens shutter. This can be double check by remounting the lens and push the lens to the upper side before locking it.
- if both lens and it's placement is OK, but still there is failure, try to open the right side cover of the camera, and inside you'll see the mechanism like in picture below
on the red arrow area, you will see 2 black screws with black loctite holding small metal bar. Loosen up the screw, and push the small metal bar down (just enough, see the effect first), retighten the screws. This will add extra futher movement on the camera coupling driving the lens cocking lever. I did this and the 20% failure rate is gone ! Time to enjoy the camera !