ArmitageShanks said:Haven't seen this happen on any of the four pairs that I ordered. I suspect it could be a duff cell in the glasses. If you allow lithium-based cells discharge too far, they won't recover. Always best to leave them in a semi-charged state (and check them ever few months if you don't use them).
I had this problem, and even had a replacement sent from the eBay seller. The day the new pair turned up the old ones came back to life. The seller didn't ask for the old pair back, so I have a bonus pair for free.
I still don't know what caused it, but I just plugged them in with the new cable with the new glasses and bingo. The old cable works as I have used it since.