I wonder if the initial cause of the issue was a bad capacitor, and perhaps that led to a damaged swing sensor? In other words, the ones that were fixed by a replaced capacitor had intact swing sensors, yet our swing sensors were damaged due to bad current through the broken capacitor. I know I tried turning off/on my saber, rebooting it, reformatting the sd, etc, many times before I replaced the capacitor. It may be that continued usage with the bad capacitor messed up the swing sensor after some time.