Howard,

I don't own a light probe, but am  thinking about picking  one up and
perhaps  this would be a good use for one:


For about 6 bucks at home depot you can get a 3 prong  outlet tester.  It
has 3 led's on it, 2 of  1 color and 1 of another  color.  2   greens and a
red, or  whatever.

Depending on  what combination of led's light  up, you know if the  outlet
is  wired correct, if the ground is open, if the ground and neutral are
reversed, nutral open, etc.


Good luck,Steve KW3A



----- Original Message -----
From: "Howard Kaufman" <[log in to unmask]>
To: <[log in to unmask]>
Sent: Wednesday, November 02, 2005 4:04 AM
Subject: hummmm


> I have a ground loop somewhere in my house.  You know how boring that
> is to find, and how expensive it is to pay someone else to find it.
> Well it gets hum in to the tv audio outputs in to the amplifier and
> speaker systems, that I use for that purpose.
> So do any of you know where to find an audible polarity checker that
> I can plug in to each of mmy outlets until I find the problem?
> How fun!!!
>
>
>