Need Help! small laser power - CNCzone.com-The Largest Machinist Community on the net!

bibi · #1 07-12-2008, 09:58 AM

Hi,

I have 60W laser tube in my laser engraving machine and few days ago they immediately stop working correct:

I do not sure is it problem in tube or something else.

when i press on machine test button normally I have max laser power ( on instrument, I think, 25 mA) but now I have about 6 mA. Do you think That problem is in laser tube or not. Laser tube has about 300-400 working hours.

I am try reinstall software but same result. Manufacturer of machine said that problem must be in tube, but...

hpc laser u.k · #2 07-21-2008, 08:58 AM

Is the tube "lighting" when you test fire ?
is the water flowing the correct way ?
Is the water level o.k
How is the h.t connection to the tube?
Try these first
Thanks Chris

lamicron · #3 07-21-2008, 04:05 PM

Check the power supply,

bibi · #4 07-22-2008, 02:11 AM

HTML Code:

Is the tube "lighting" when you test fire ?

yes but not strong like before, end only on manual control on full power.

HTML Code:

is the water flowing the correct way ?
Is the water level o.k

I`m always checking water in tube and waiting if have some air bubbles that gone, from that reason I haven`t back cover that I can everytime check tube.

as I said machine working normally two day before and only one day stop, I try cut some plywood for new box and when I try cutting I have seen that power is too small and then I try with test button and sow that I can took more then 6 mA....

HTML Code:

How is the h.t connection to the tube?

what is "h.t"

HTML Code:

Check the power supply,

how can I check power supply, you think laser power supply I suppose, because other parts on machine working OK.

MacGyver · #5 07-22-2008, 07:25 AM

You mention you were cutting plywood before the machine lost power... have you checked the optics? A lot of plywood glues can foul the optics...

bibi · #6 07-22-2008, 07:38 AM

I cut that plywood many times and problem... problem is in power of laser; normally I set power on 85 - 90 % and speed 15- 20 and working well and on instrument I have about 25 mA and now I have only 6mA !

bibi · #7 07-24-2008, 02:35 PM

look that video:

You Tube

is it that end of tubes life ?

bibi · #8 07-28-2008, 07:48 AM

I am changed laser tube end laser working fine but...

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