First question to ask is in my opinion: did you change anything at all?
This would include:
- windows drivers
- wiring
- dust collection
- etc.
I’ve listed all my experience with stopping carves here.
All my carves stopped at around the same time, out of the blue, too. I did not have any problem for my first year of my xcarve ownership (more or less). I couldn’t figure out why all of a sudden that problem appeared.
My advice would be: try all of the cheap fixes and check whether it works. If it does, be happy, if not try the other stuff as well.