Got2Go wrote in message
news:05nbc.6257$zh.3266@fed1read07...
If the outer shield/ring/shell of the power connector is tied to chassis,
then that is your ground and the pin is the positive.
This is the most common configuration.
Your vm readings also seem to support this.

Plug away. Center pin=Hot +

Got2Go

Success! you were right. Thanks for the moral support I needed to switch
on!!
Now for the next problem, finding out why the mousepad isn't
working...............

Thanks again.
Malcolm