On Sun, 29 Nov 2009 16:51:03 +0000 Andrew C <countfuzzball@xxxxxxxxx> wrote: > Hey Fons, > > How can I check if the keyboard/power supply is grounded? The power supply > itself is a three pronged one.... > > Thanks. > > Andrew. If you don't have any kind of test meter, a really crude way to find out is with a 9V battery and your tongue! Unplug the power supply from everything. Stick one terminal of the batter on the earth pin of the mains plug, and put your tongue between the other terminal of the battery and the ground side of the DC out of the power supply. You will feel a strong unpleasant (but not dangerous) tingle if the ground connection is carried through. -- Will J Godfrey http://www.musically.me.uk Say you have a poem and I have a tune. Exchange them and we can both have a poem, a tune, and a song. _______________________________________________ Linux-audio-user mailing list Linux-audio-user@xxxxxxxxxxxxxxxxxxxx http://lists.linuxaudio.org/mailman/listinfo/linux-audio-user