Tom,

One last thing:  On the inside it is a Phillips head screw.  A normal 
length screwdriver will work fine.  A stubby one won't reach

73, Steve KW3A.

On 2/28/2011 9:19 AM, Steve Forst wrote:
> Tom,
>
> This isn't your amp, where  a few thousand volts are floating around.
> While you should always be careful messing around with this stuff, look
> at  it this way:  If you turn off the supply and unplug it from the
> wall, and your hand brushes against the a.c. plug, will you get fried?
> If you are super paranoid,  unplug it and measure the voltage at the
> plug, which will be zero, and proceed.
>
> I do think you should tighten this thing up.  I'm not sure it is even
> the "official" ground lug.   On the inside it is holding a small thingee
>    with wires connected to it.    I'm not positive, but it may well be
> where the
> third wire of the a.c. line connects to chassis  ground.
>
> If it were me, I'd tighten it up and ground to one of the cover screws.
>      And since you  don't know you're own strength, just tighten good and
> snug, you're not torquing down head bolts on a Mack truck.
>
> 73, Steve KW3A
>