I was in the middle of a cutting job and my laser stopped working. The lens head was still moving, so I know the electronics are still working in that regard, but the lens itself stopped firing. The gauge also stopped displaying the mA. I don’t know if my laser tube needs replaced or if I might be experiencing an electrical issue. Any ideas?
Could just be HV Portion of Power supply - or the connection to the tube
Check for cracks in tube,are you sure waterpump was pumping?
I had the same fault, I changed the tube, but still the same, I then changed the power supply, and it worked great.
The low voltage was still working, allowing the head to move etc, But the high voltage was gone, stopping the tube firing.
Hope this helps.
@Phillip_Conroy yeah there’s no indication of the tube being cracked and water seems to be flowing fine!
@Stevie_Rodger where did you find a new power supply? I had searched Amazon and eBay and had a tough time finding one. Any suggestions on how to ensure that that in fact is the problem? Thanks!
Sorry I have a 3 year warranty, so I got mine from the supplier.
There isn’t any way to test the high voltage side unless you have specific test equipment,
But if everything else is ok. It looks like the power supply.
Ah OK, will look into that more!
@josh_mozug
Is this a standard K40?
Please post a picture of your supply:
1.) will the laser fire if you push the “Test Sw” with the “Laser Switch” engaged?
2.) does the led on the supply come on?
3.) does the laser fire if you push the test switch on the laser power supply with the “Laser Switch” engaged?
Do you have and know how to use a DVM?
1 - the laser will not fire when i push test
2 - the led does come on
3 - the laser does not fire
and i’m not familiar with DVMs.
the sympums you have, were the same as mine, and the power supply was at fault. My tube was fine. Hope this helps you get the machine back in working order.
Good luck
@Stevie_Rodger thanks for your help! I’ll give that a try here!
I bought mine used and I had the same problem the stepper motors moved but the meter would be eradicate or just zero. I found one of the leads on the potentionmeter
was loose. I would start looking to make sure nothing is loose.
This sounds like a bad supply. The test switch on the lps will fire the laser at whatever power the pot is set at irrespective a any other controls.
You can try one more thing. Tie the “IN” pin to 5v and push the test button on the lps to see if it fires. Warning it will fire at full power irrespective of interlocks etc.