Batteries are definitely silver oxide. I had alkaline on hand, but went out and bought some fresh silver ones, because I had read that there was a voltage sensitivity.
The indicated shutter speed seems to work properly. Changing the aperture setting gets a corresponding speed indication.
I have not tried changing the film speed setting. It was correctly set for the film. Having read that there are actually two metering circuits, one for the view finder and one for the shutter, perhaps exercising the film speed setting might make a miracle happen.
Since, at any aperture, the shutter stays open several seconds, I fear it may be a failure of the photo cell for the shutter. (One of the causes google turned up for me.).
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