I believe you're right, that is also, where the third prong on the AC line
connects to the case, if I recall. My current switching power supply doesn't
even have a grounding lug on it anywhere, I would think that would cause
ground loops using that.
----- Original Message -----
From: "Steve Forst" <[log in to unmask]>
To: <[log in to unmask]>
Sent: Monday, February 28, 2011 9:19 AM
Subject: Re: RFI Saga continued
> 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
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