Here's a real odd one for you. The other day my unmodified Hasbro Obi Wan saber started to just power on and off all by itself, and I didn't even realize it was happening until I witnessed the event with my own eyes. Only at that point it would not shut off! I've tried pushing the switch back and forth, which only yields a momentary flicker of a shut down. I replaced the batteries with a freshly charged set and it powers up as soon as I tighten the pommel over the speaker module.
This saber has been a display item for 99% of the 3 years I've owned it, just the occasional twirl and shake to set off a clash, so I can't see any physical damage being the cause of these sudden symptoms. Any ideas as to why my saber acts like it's possessed? And is there any way of fixing it?