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