Hi Herb, I used to work on dozens of the x-370's. The problem might be the shutter is already advanced and the shutter won't release because of a bad capacitor on the bottom of the camera. If you remove the bottom plate you will see a small flexible circuit with a little black can soldered to the flexible circuit. That is more than likely the culprit. So i would replace that and make sure you have a good battery to try it out. If thats not the problem you might have an issue with the film advance gearing which requires replacing and timing the gearing to the shutter assembly.