I had one with the same issue and yes it is a well known problem with that model.Luckily mine was still under warranty and went back to Manchester for repair. That was a few years ago though and I cant remember if the exact cause for the problem was identified. I would get as much evidence from the internet as you possibly can and phone Tag Heuer tomorrow and ask there advise,You know there's an issue and I am sure Tag know of the problem.I would hope that they would be accommodating but I wish you the best on that.