I could not find any successful repairs except sending away and paying more money than the camera is worth. The melted hole is very small and above the film area of the take up spool. There is a spring or coil of wire between the advance shaft and the plastic take up spool that is to provide the tension to the spool. Either over time or bad luck the take up spool does not have the tension to coil the film. There was a thread showing someone dissembling a bessa to solve the problem. He gave up.