Konica T3N issue on fast shutter times

[alberto1975]

I have a Konica T3n SLR that cannot close the lens aperture at speeds of 1/125 and faster. it seems that the camera does not have enough force to close the aperture and the shutter remains stuck. Only by unscrewing the lens can the shutter be released

 

[loccdor]

It could be a problem with the lens or with the camera. How does the lens respond when you operate the lens mechanisms with your fingers? How does the communicating pin of the camera look when you shoot it with no lens?

If you're lucky, maybe one of the pins just needs a little extra lubrication.

I had a lens that sometimes wouldn't close its aperture before the shot. But sometimes it would. I took the lens for a CLA and it seemed to temporarily fix it, but maybe that was an illusion as the problem eventually came back and the aperture eventually stuck wide open permanently. But this was a Soviet lens of lower mechanical quality.

 

[alberto1975]

It could be a problem with the lens or with the camera. How does the lens respond when you operate the lens mechanisms with your fingers? How does the communicating pin of the camera look when you shoot it with no lens?

If you're lucky, maybe one of the pins just needs a little extra lubrication.

I had a lens that sometimes wouldn't close its aperture before the shot. But sometimes it would. I took the lens for a CLA and it seemed to temporarily fix it, but maybe that was an illusion as the problem eventually came back and the aperture eventually stuck wide open permanently. But this was a Soviet lens of lower mechanical quality.

the porblem is not related to one specific lens but it happens with many different lenses. so I presume the problem is on the camera. the mechanism seems to be "weak" also without lens attached. I'l lcheck the mechanism

 

[Paul Howell]

Does it occur when the lens is off the AE setting?

 

[alberto1975]

Does it occur when the lens is off the AE setting?

sorry.. I forgott the info...
only when tehe lens is set on AE