After about 4 min. into the last job of the day the laser stopped firing. Checked the lense and found it dirty. After cleaning the lense and mirrors I restarted the job and after about 30 seconds it stopped firing again. Checked and cleaned the filters just in case, no help. I think the tube gave up after only 8 years and 8 months! Can't think of anything else that could cause the problem, any suggestions?
This is a ULS M300-50 and has given superb service till today.
Dan Hill