I just purchased a 50W laser on Ebay and I am having troubles getting the laser to fire. I think I received a 220v unit, as it states it on the label and there is no switch on the power supply, just a hole where the switch would go. The air & water pump were both 220v as well, when I contacted the seller he stated :
There’s a built in transformer, either 110V and 220V will work, please don’t worry. As long as the power supply shares similiar parameters as the one we install, either 110V and 220V will work.
Is that true, why do most come with a switch to select input voltage?
The power supply does light the led’s, move the gantry and power the bed, nothing seems sluggish, but I don’t know how fast it should move.
The laser fired a few times, but was very weak, now it doesn’t fire at all, but everything else works.
The tube looks very good there are no visible cracks that I can see, and water flows though it with no problems.
*Edit - I also purchased a CloudRay 50W power supply and tried to see if I could get the laser to fire with the test button on the LPSU, it powered up then stopped, turned out to be a blown fuse which has the markings F5AL 250V.