John,
Did you really mean boiling the speaker wires!!  I'll bet not but it 
sure made a fun read!
Pat, K9JAUAt 11:15 AM 12/8/2015, you wrote:
>Is replacing the wall wart an option? I don't see why not, that's how I'd
>handle that. ON the hum with the speakers, I've found some do that, and some
>don't and don't know how to fix that. If you have a station ground on the HF
>radio, try removing it and see if the problem goes away on 10 meters, if you
>don't have one and can add one, try that. You can move the wires around on
>the PC speakers. I know with the ones I use now if the wires for the
>speakers run right along side the coax I can get that same thing but I move
>the cables apart and it goes completely away. You could try chokes or
>boiling the extra speaker wire. You may end up with new computer speakers,
>those are suggestions I can think of right now. I'm also in a very limited
>space and managed to fix that problem pretty easy and on 2 meters, I have
>100 watts available with no hum anymore just by separating the wiring. I
>pretty much have it set up so my coaxes are all together on one side of
>everything and everything else is on the other side with minimal over lap.
>It works out very well that way. It's a mess, but works.
>
>-----Original Message-----
>From: Matthew Chao
>Sent: Tuesday, December 08, 2015 11:11 AM
>To: [log in to unmask]
>Subject: Hum Everywhere in my Shack
>
>Hi, Folks.  I seem to be having a grounding problem in my shack.
>
>First, I've got a noisy wall wart that powers my network switch.  It
>effectively blanks out some of my 2-meter repeater freqs on my TMV710A.
>
>Second, on the other end, when I transmit on VHF/UHF, I get a hum
>through my PC's audio.  The same thing sometimes happens on HF as
>well, particularly on 10 meters.  Sometimes, I can hear my distorted
>self coming through on my PC's desktop spekers.
>
>Due to limited space, my PC and ham gear need to coexist on a 6-by
>4-foot desk.  And neither wants to always play nice.  Any suggestions
>that don't involve a lot of moving and shoving would be
>helpful.  Thanks in advance.--Matt, N1IBB.