Laser disconnects

When I set my ortur laser master 2 20w to cut
The laser works 5-15 mins and then stops for no apparent reason and switches the laser off
Can anybody help please, as I am a newbie of 2 months

I have the same problem, But mine has been working fine since I got it in Dec. Just started stopping randomly may half a inch in, so then I reset and start again over the same piece next time it goes maybe another inch stop. Do it again went the whole way! Now it stopped and did not home itself like all the other times??? I read on here that adding a ground to the frame may help, it did Not !!

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