Originally posted by Odinz Mine used to have an issue where the shutter would stay open even on bright sunny days which happened most often when I had the winder or motor drive turned on. Many times the only way to get it to close would be to turn the winder or motor drive off or remove them completely. It used to happen less frequently when I just used a bare camera. It seemed to have started not long after I had the battery cells replaced in the LX power battery pack so I haven't used the motor drive since Eric replaced the board just in case.
He was unable to replace the board in mine. Strange your symptom is like mine with the particulars reversed. My shutter, when this happens, also remains open regardless of meter reading. The way to shut it is to move the shutter speed to any manual speed (usually 1/2000), then it closes and will carry normally. It happens probably every 10-20 frames on average when using the camera by itself. With the winder attached and on it happens at least half as frequently, probably less. So very odd.