Lightburn shuts down laser when air pump come on

I have the sculpfun S30 pro max 20w laser it runs fine until it comes to put the air on? The pumps comes on BUT the laser stops working in lightburn?? I put a new power unit in for the pump and switch and when it comes to do the air I have to switch it on manually…?? Lightburn, Now they said that is probably the unit!! So I got in contact with sculpfun and they have been very very helpful with me and sent me a new pump, power unit and a new mother board and it still shuts down when the auto pump comes on.
So I have the apple Imac 27", Can lightburn help me figure this out??

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