LaserUser.com Forum (formerly RDWorksLab)

My 5030 blue and white 50w laser was fine when last used in April / May. It has an old duvet covering it when not in use and occasionally has stuff from the boot of the car put on it when room is necessary. I went to use it yesterday and everything is working as it should do but no burn! Is it possibly the tube that needs replacing? Any advice would be a help. Neil

First I would check all the safety switches working and the water flow switch

Hi Pete.
It doesn't appear to have any interlock switches on this machine. I've flushed out the pump and changed the water and can see it flowing through the tube. Is there a way of metering out the flow sensor to check it actually working?