Need Help! 40w chinese laser only works on around 25% power!?


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Thread: 40w chinese laser only works on around 25% power!?

  1. #1
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    Default 40w chinese laser only works on around 25% power!?

    Hi,

    I have a 40w k40 chinese laser (UK based)

    I recently run the water to hot and the laser stopped working.

    I replaced the tube, and now the laser will only run on a power of 25%, if i turn the power slightly above that it will not run.

    Will i need a new psu? or is there somthing i may be missing?

    thank you in advance for any help!!

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    Default Re: 40w chinese laser only works on around 25% power!?

    40w chinese laser only works on around 25% power!?-psu-jpg40w chinese laser only works on around 25% power!?-psu-jpg

    Heres a photo of the psu, are there any fuses which may cause this types of problem?

    thanks!



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    Default Re: 40w chinese laser only works on around 25% power!?

    Do you have a mA meter on the tube? It needs to be in series with the ground lead.

    LightObject 40 Watt Laser, MakerGear M2 3D printer, 20 Watt Ray Fine Fiber laser... master electrician - Retired.


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    Default Re: 40w chinese laser only works on around 25% power!?

    i hope to find out this answer as well as im having the same trouble. i cant run mine over 20% and the Ma meter goes off the chart. i have posted a video on my post..



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40w chinese laser only works on around 25% power!?
40w chinese laser only works on around 25% power!?