The other day I went out to cut something on my laser put the piece in did the focus and loaded the file. Hit the start button a and laser started to move but no laser beam and nothing on my meter. I thought new power supply of laser tube. I was just about to test the power supply and happened to see that I have a laser switch that I forgot about and I must have bumped it as it was off. Thanks that was the problem as I had thoughts of replacing a 150 watt Reci tube.