Quote Originally Posted by GeorgeD View Post
I figure it just might be the bob as the charge pump led come and goes as does the power led,this board is basically naff because what happens is the led without pwer supply attached to 70v rail,glows dimly and when you attach the power supply its bright,I never known a piece of equipment that functions on the power side like that.
My System 4 board does that as well so I don't think that's the problem, as Irving says, it's just picking some power up from the parallel port.

If it's the same as the System 4 board then the charge pump LED should be on when it's powered and there is a signal on the charge pump pin (provided by Mach3) so that all sounds ok as well.

I'm afraid I don't use Mach3 so I can't help with configuring that.

Good luck!
Mark