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If Directv did by Tivo, I wonder if, as a condition of the sale, that they would be required to license the DVR technology to Dish for a minor fee. If the the Tivo sale could result in hurting 14 million Dish customers (by losing their DVR), sure that would be addressed before the sale was...

I give up Looks like "no ground" is the only solution. I ran a new line to the ground block and with that new line and the ground wire being the only things connected (the original coax wires were disconnected at both the ground block and the Sat receiver), the hum was there. Again I noted that...

I had tried disconnecting cables at either end, but not the middle. One of my cables is a direct run without a break. The other is connected in the attic. I think I have enough Coax to run a by-pass of one cable at a time to see if that has an effect. I'm pretty sure it's from the ground...

Postscript - Ground caused signal problems Ultimately my hum went away but I quickly discovered more bad news. My last state: - ground loop isolator in the SW input line - Common ground on the outside ground block - Ground from the A/V receiver to the outlet screw With both grounds...

If a SW hums in the forest, can anyone hear it? Ah the sound of silence! I put an Xitel ground loop isolator in the SW input line and that has removed the hum. The device is rated to 20hz and my sub can, in theory, get down to 18hz. But I assume I won't notice the difference in any practical...

And I did disconnect the messenager wire.

Wildbill. I've tried several HDMI cables. Same result. The TV itself has only two inputs. One HDMI from the receiver and a second Hdmi from a Western Digital media player.

I did try component as you suggested. The hum started as soon as I attached the first cable. I'm thinking I should try an RCA Cable ground isolator between the receiver and the SW.

The SW doesn't have a ground. I went through the other suggestions -- nothing helped.

I opened up my breaker panel. All the whites are on one side and all the cooper is on the other. I noticed that the cooper is twisted together in groups when connected. I wonder if that's left a wire not well connected.

I've tried some things -- I'll try again, making sure to check these items now that I have the receiver itself grounded.

I missed that part. Thanks for reminding me. I check on that next.

Another day, another result I attached a ground from the back of the receiver to the outlet cover screw. I also tried attaching directly to the wire on the green post of the outlet. The ground reduced the hum about the same as when I have the FM antenna routed through the power strip...

The ground lug reminded me of a post I found from a Google search in which the OP suggested running a coax from the FM antenna connection of the receiver to the power strip connection. I just tried that and it reduced the level of hum by about 50%. I'll have to pull the receiver out to get...

I'll check my receiver. If it has a ground lug, I'll give this a try.

This is exactly the case with my house. The water main is PVC. The shut off is at the meter, about 15 feet from the house. One of the copper pipes for a hose connection has a wire connected to the house ground rod.

AC power from phone ground? Checking with my meter, I find that the ground for the phone system is putting around 1 volt A/C into the ground. If I remove the phone ground, the hum goes away. Naturally I replaced the phone ground after this brief test. Is 1 volt A/C normal coming from the...

And I'm saying I have neither basement or crawlspace. I have a concrete slab on the ground. I do not have access to my water main.

There is no above ground water pipe with 50 feet of the dish. The main water line into the house is underground. So I'm not able to try this.

I tried various plugs near and far today. Repluging both the SW and the Directv receiver. No difference. What about a badly installed connector on the coax causing this? One of the shield wires in the wrong place? Can't that cause a hum?

I tried connecting the wire from the dish post directly to the house ground rod and leave the coax ground block non-grounded. The hum was just as loud. Is your HDMI cable going directly from the HR21 to the TV or is it going through your stereo receiver? My HDMI cable is connected through...

wildbill129, I have one ground rod. It's right by the electric meter. The ground block for the sat is about 2 feet from the ground rod. The satellite pole is attached to the ground block along with the two coax cables. The satellite doesn't have it's own ground. All components are...

There is only one ground. I'll look into "ground loop" to see what I can learn. thanks.

I've just reconfigured my system to run all components via HDMI into a new A/V receiver. My Subwoofer was a hum now. I tried unplugging various cables and find that it's the satellite receiver causing the hum. If I unplug both coax cables, the hum stops. I've check the outside and both...

Finally! I also had the free Starz applied to my account today.