Dave >Has anyone experienced a problem with Synrad CO2 lasers whereby on power-up >the red " laser-on" LED glows brightly (indicating max power) but , sadly, >with no laser output? We had a similar problem with our Synrad laser about a year ago. The problem was a faulty front shutter. We discovered that even though it appears to be just a mechanical shutter it also has an electronic switch which prevents the exit of the laser. It sounds asif this could be your problem. Kevin