I have two weird plugs on the back by my AC power supply that say they’re for a water pump, the wires seem to terminate inside shrink-wrap inside a wire wrap. I do not have a water flow sensor to cause a non fire issue, and the K- slot on my PSU has nothing in it, and the rest of that ribbon goes to the top panel display. Is there a LightBurn setting that I am missing that will correct my issue, or is it internal troubleshooting? Laser will fire on LightBurn if I depress the TEST button on the PSU The ammeter shows the expected output current for the power I have set but does not produce a beam.

Laser will NOT fire using the fire button in LightBurn or if I task it to do a job, the head will still move around. Laser fires with the test switch on the K40 I swapped the control board supplied from OMTech so I can run LightBurn on my Mac.Įverything works splendid and as expected, laser moves with LightBurn commands. I got a K40 yesterday after my diode laser finally reached it’s end of life.

K40 lightburn