I'm using a borrowed Schneider Symmar 1:5.6/150 mounted in a Synchro-Compur shutter. Today, while out in the cold air making a few images, the shutter failed to open on "T" after working properly (I think, since I haven't processed the film yet) for my first two set-ups. So I packed up and came back to my studio.
I did a little testing, and found that the shutter somewhat randomly opens when triggered. The response is the same across multiple shutter speeds from T to 400. Sometimes the blades open and sometimes they don't. The sound of the gear train seems pretty normal.
My initial thought was that the shutter doesn't like the cold, although it worked properly outside in cold air on Saturday.
Any thoughts before I send it to a competent repair shop in Seattle (closest place for such things)?
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