Copal Sinar Norma stuck open

[jimsinar]

I have a Sinar Norma shutter (the old green one) and the shutter is stuck with the leaves in the open position. I have the original release cable, but when pressed nothing happens.

Are there any tips and tricks on getting the shutter back in to working condition? I have searched for repair manuals, but can't seem to find anything useful.

[Leigh]

Is the preview lever activated?

Is the shutter set on Time and fired?

- Leigh

[jimsinar]

Is the preview lever activated?

Is the shutter set on Time and fired?

- Leigh

Hello Leigh, thanks for replying. Yes the lever is activated and the shutter is fired.

[Leigh]

Hello Leigh, thanks for replying. Yes the lever is activated and the shutter is fired.

I'm afraid I don't understand that response.

If the preview lever is "activated", it's holding the shutter blades open.
It needs to be released to close the shutter.

If the shutter has been fired with the speed selector at Time, it must be fired again to close the shutter.

- Leigh

[jimsinar]

I'm afraid I don't understand that response.

If the preview lever is "activated", it's holding the shutter blades open.
It needs to be released to close the shutter.

If the shutter has been fired with the speed selector at Time, it must be fired again to close the shutter.

- Leigh

I'm sorry English is not my first language. I'll try to explain.

The red lever is up and the shutter release has been pressed (which locked the the shutter in open, even though the lever is up).
If I try to push the release cable I get a springy resistance when pushed all the way.

[W K Longcor]

I am not sure about the older green shutter, but my new one has a connecting cable attached to the rear standard which keeps the shutter open for focusing, and closes it automatically when a film holder is inserted. if this cable is not properly installed, the shutter will not close. perhaps this may be your problem?

[jimsinar]

I am not sure about the older green shutter, but my new one has a connecting cable attached to the rear standard which keeps the shutter open for focusing, and closes it automatically when a film holder is inserted. if this cable is not properly installed, the shutter will not close. perhaps this may be your problem?

Thank you for replying.
I have not used the cable from for the self closer.

[Ken Lee]

Make sure the aperture dial is set to the widest setting.

[Leonard Robertson]

It may not help you since these pictures are of the newer Sinar Copal shutter but this gentleman has a series of interior pictures of the shutter:

https://www.flickr.com/photos/jones-...7626113820180/

Even if you don't want to try repairing the shutter yourself, these pictures may help you visualize what is going on inside your shutter.

I have had leaf shutters mounted in lenses which would stick open when fired on the lowest speeds (due to the slow speed mechanism needing cleaning). Moving the shutter speed dial back to faster speeds would often allow the shutter blades to close. However I have no idea if it is safe to change speeds on your Sinar shutter with the blades in the open position. It may lead to bending or damaging something. If you try this, go slowly and don't force the speed lever.

Len

[Daniel Unkefer]

I have three Green Norma Shutters, and one I have had CLAed by a local repairman. He commented to me on how nicely designed it is. He said the movements are jeweled like a fine Swiss watch.

Any repairmen is your area?