Re: [CAD_CAM_EDM_DRO] help with g201 needed

Al Schoepp wrote:

> At 06:09 AM 20/01/2002 +0000, you wrote:
> >Al Schoepp wrote:
> >
> > > Hi Alan,
> > >
> > > Since I got the info that it was the opto that failed and to check my
> > > wiring I've looked everything over and can see no problems. I installed
> > > the repaired 201 and it seems to be working great. I have no idea why the
> > > opto failed, maybe a small piece of swarf got in there and shorted
> > > something out? I'm happy that it's working now but would be happier if I
> > > new what caused the problem in the first place.
> >
> >More likely it was electro-static discharge. Sometimes, tiny discharges
> >that you can't feel at all will destroy components. Sometimes, discharges
> >that make you jump, are audible and even visible will have no permanent
> >effect. Especially, if you are connecting and disconnecting the cable to
> >the computer, and removing the computer for other purposes, it is easy
> >to walk into the room with a charge on your body and touch the connector,
> >zapping whatever is on the other end of the cable.
> >
> >Jon
>
> I should have thought of that, that is likely what happened. I'm using the
> machine in my carpeted apartment and there is quite a bit of static.

You might want to put a sheet of aluminum foil down on the bench, and ground
it to a wall outlet. Touch the aluminum first before touching any other part
of the machine (computer, drives, CNC machine).

Jon