LaserUser.com Forum (formerly RDWorksLab)

Hello. I have a machine with two tubes, 40W and 150W.
It is nearly one year old, and in the middle of an engraving job with the 40W, it stopped firing. It is all of the sudden, and I noticed when I checked. Tried normal things (checked cooler and so on) but nothing. Might be power supply? how can I check that?
Thanks

Damn...a little bubble inside and some dirt even I used distilled water. Will check connections after a while (a bit concerned with electricity)

Javier Zaratiegui wrote: Fri Aug 30, 2019 It is nearly one year old, and in the middle of an engraving job with the 40W, it stopped firing. It is all of the sudden, and I noticed when I checked. Tried normal things (checked cooler and so on) but nothing. Might be power supply? how can I check that?

tubes have no electronic parts. they don't break suddenly, instead they lose power as the gas is consumed. chances are that your power supply is dead. it may just be a fuse.

you also want to check wire connectivity... from control board to power supply, from main power to power supply, and from power supply to laser. be careful, those currents can kill you!

the fuse...but even after fixing it...it doesn´t fire.
Think I would take the PSU and check its back because even if it seems ok, it might be damaged.
Tube...was a bit dirty and found some bubbles (stupid me) but after shacking it both disappeared (I guess I should change the water after one year...and maybe more often next time).
So...will try to test a new tube I had as spare but it all points to PSU. It runs, but it doesn´t fire the tube.
If there are other things to consider PLEASE SHARE!
thanks