My S1 20W keeps turning off and on.  Updated firmware, reset everything, hit the emergency button, pulled the key, unplugged from everywhere, and it's still doing it.  I've already ruined two tumblers now because it stops mid job.  Anybody have any similar issues and know how to fix it?  This laser has run great 9 months, but now I am having issues.

When it stops, the led lights turn off, but the purple light on the button stays on and the air assist continues to run.