My K40 just stopped lasering… Don’t know if it’s the power supply or the tube so hoping someone here has experienced this…
As I was playing around this AM the laser seemed to get weaker and weaker… I’ve had the machine about a year now and always run under 10mA max and I use it pretty infrequently.
I pulled everything apart so I could get a look at the tube and I can’t see anything wrong with it (but don’t know what to look for exactly)
I test fired it and I see a thin line of light on my phone (not sure if I should look at the firing tube with my eyes)
I put paper right on the output and it did not get burned or any marks on it even when I turned the power all the way up.
When I run it 0-10mA I hear a hissing/buzzing from the power supply but above that it goes silent… I also every once in a while hear a loud bang or popping sound while the laser is firing.
Any idea what might be wrong and what I need to look at replacing?