Laser is not turning on

I was running my laser just fine as it’s been doing…
and then in the middle of a run, it just turned off. It is off at the black box.
No changes were made with connections, I went back to look for anything loose. Dip switch 4 is on.
When I turn the black box on, and then press the reset button, the fan turns on for approximately 5 seconds then proceeds to turn off…
Any idea what to troubleshoot now?

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Just now installing mine. My laser led light won’t even come on. The other light comes on but not the laser.