@dwalter , Dirk, I will post a couple links for you to check out on repairing a sticking digital camera shutter.
You could have a good camera repair shop have a look, diagnose and estimate repair, but you would have to weigh the the cost effectiveness. Good luck.
I hope this helped you out, if so let me know by pressing the helpful button.
http://camerarepair.blogspot.ca/2009/05/simple-fix-for-stuck-shutter.html
http://www.steves-digicams.com/knowledge-center/how-tos/troubleshooting-repair/quick-shutter-repair-how-to-fix-a-stuck-shutter-for-digital-cameras.html#b
https://photography.tutsplus.com/articles/helpful-tips-for-solving-common-camera-failures--photo-3015