Receiver hum(noise) grounding???

[hikerak]

Hello, :hi:

I think this is where I should post this question...

I have a Harmon Kardon receiver, Dish 301, sayno vcr, and Sony 5 disk DVD player. I also have an older 27in TV with only a coax cable feed so I have one of those converters( I can't think of the name of it) that you get from radio shack connecting the DVD, 301, and the receiver to the TV. I needed it mainly because of the DVD not being able to connect to the VCR with out the picture being messed up. I also have an OTA to get my locals. I get a hum noise out of the speakers. :hair: I have had this noise for years and have just delt with it. I would like to try to work on it now.

I think this has to do with grounding but I am not sure. And I haven't looked to see if my dish cables are grounded yet. I will do this tonight. From reading the forums I have noticed that my DISH stuff should be grounded to a grounding block and to a water pipe. Should anything else be grounded? how? And is the noise from something not being grounded or from something else...??? :shrug:

Thanks in advance.....

Matt

[Sandman]

Had the same problem, what I did was to remove coax connections one at a time until the hum stopped, after identifying the culprit I used 2 coax to twin lead adapters, 1 that had the twin lead, 1 that just had the 2 screws for the twin lead, attach the twin lead from one adaptor to the screws on the other adapter, you now have the adapters connected with 2 free coax ends. Connect the incoming coax to one end and a short piece of coax to the other and to where you disconnected it from, and no more hum, you have built a filter.