A few weeks back my laser stopped firing half way through a project, I just assumed it was the laser tube as the one I had was the stock tube from 2014… Many hundreds of express delivery dollars later, I’ve installed the new tube and still nothing from the test fire
A few things to note:
Machine still powers the fan and water pump
No squealing noises
Fuse is not blown
Nothing in the power supply looks shorted, no smell
The laser head moves to the home position when I turn on the laser cutter
All the lights come on and I get the little laser LED when I try a test fire but still no burn
Thoughts on what it could be? Am I just very unlucky and got a dud laser tube replacement?
Yeah, I feel your pain. Earlier this year I thought my tube had died but it ended up being the power supply. But with a new tube and power supply my laser is running better than new.
It’s circa 2014 from Aliexpress and I’ve wanted to hurl this machine off the balcony so many times lol
We’re a two engineer household so between the husband and I, we should be able to work it out
ps. I have no idea what the black box is and the I tried to pull on it and it’s not a cover that comes off… I’ll send it your way eventually when I get myself sorted, it can be a new addition to your K40 LPS museum
If you are thinking about an upgrade to the K40 controller and power later you may consider that there is also a 50W: https://amzn.to/2Fdysmr [but you have to also buy a DC supply]. Keep in mind that in the DC supply in the K40 is under powered if you do a controller upgrade.
I was thinking of replacing the HVT on my current power supply to see if it will work and then I’d have a spare LPS around which will be useful in the long run… I might pick your brain about it eventually when I get around to it Thanks for the spreadsheet!