All,
I have been enjoying my new Axiom setup for close to a month now. My setup has been isolated so far in that I have only my PS3 and DVD player hooked up to it - I have only been watching movies/listening to music from disc or playing games.

Tonight I decided to try some regular TV so moved my HD-PVR to the Axiom setup and plugged it in. I immediately had to shut everything off as I got a very audible 60 cycle hum through the system. I have figured out that it is coming from the coaxial cable itself. As soon as I touch the coax cable to the filtered cable input on my power bar/filter the hum can be heard.

Here's my setup:

- AVR, TV, PS3 and DVD player share a dedicated circuit
- all above are plugged into an APC power bar/filter
- sub is plugged into wall on a separate non-dedicated circuit

I have tried the coax going direct to the PVR and through the APC power supply, both cause the hum equally.

I hope to clear it up this weekend, so any help would be appreciated!

Thanks in advance.

You may want to get this, though probably will not be able to get it by this weekend.

That's what I bought when the new plasma was humming away, it worked great. Highly recommended!

I didn't realize this was such a common problem as it's the 1st time I've ever experienced it. Guess I've been lucky. Thanks for pointing me to a solution.

Out of curiosity and cheapness , is there anything I can do with my existing wiring/grounding to resolve this? I have my cable signal split to feed my small upstairs system and the Axiom HT in the basement. I do not experience this hum upstairs.

Update - after doing some research on what causes the hum I played with my wiring and was able to eliminate it. I was able to use a pre-existing coax ground block and wire it straight to the main ground wire for the house so the cable and HT share the common household ground.

Yay - I can watch the F1 from Bahrain in high def and surround this weekend!

If I am not mistaken, that is the way it is supposed to be hooked up any way.