Direct TV and digital hum problems

I hooked up a digital 5.1 reciever for a non audio bud tonight I donated to him. When I hooked up his Sat box via Roslink I got a high pitch faint but annoying hum thry speakers. I figured I would try dig coax and same result. I lastly hooked it up for Pro logic and no hum but its not digital as I had hoped to give him.
I lifted the ground, checked the ground at the junction amp in basement and all settings were verified.
I am by no means new at this, I have over $50k in my home theater and have done surround for over 15yrs all along being a DIY installer (I am also the nerd everyone calls for help.........and am pretty good at it too :)
My point is that I have tons of experience and just cant figure this out, hope some ideas come my way..........thanks all!
That phone line is a awesonme idea, if it isnt that then I am stumped. I will try that when I get back over to his house this weekend. Thanks for the idea!
Any way to move the equipment a few feet to the left or right. Tricky one since you lifted the ground.

As the years have passed we now have wireless routers , wire phones etc, wonder if it might just be in the path of a related or non related wireless signal.
The phone line didnt work, I wonder if its the way he has it stacked, on top of guitar amps and such (everything is in one big stack) could that be an issue?
He isnt an audio guy so I cant blame him but I would like to give my friend a little better sound. Thanks
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Call the sat company and tell them about it.
They will come out and fix it free.
Its their problem their equipment, not yours.
I like to dispatch them on a regular basis, seeing that they raise their prices on a regular basis!