40w Chinese laser firing wrong way!!!

Hi,

I have one the cheap chinese laser (K40 C02 Laser). Last night I was just running it as usual and then it stop cutting and flashing out the back of the machine. So i switched off. Turned it back on with low power tried to run it again. I had a quick look at the tube while it was running (Cautiously) and the the laser appeared to be firing backwards (ie not at the mirror but at the case) the other end of the tube!!? So that makes me think the tube could be ok (wishful thinking)? Could it be the power supply has shorted?

any help/ideas/comments would be greatly appreciated.

Many thanks

Phil

If you're sure the tube is facing the correct way then it's probably fried. Most tubes don't have any serviceable parts afaik.

Oh dear, I didnt want to hear that. Can you recommend any supplier of the K40 laser tubes?