Had a similar problem, found that 90% of the hum went away when I put the cable TV input through an isolator. Had to use a 3 to 2 prong cheater plug on my amp to completely get rid of it.
Getting Rid of a Ground Loop
Apologies if I'm repeating what has been said here: http://forum.audiogon.com/cgi-bin/fr.pl?aamps&1277419588 but I'm having terrible trouble eliminating a buzzing sound from my Naim Nait 5.
I'm based in the UK (if that makes a difference from a grounding point of view) and I have the following equipment:
1) Nait 5 amplifier
2) BW 630 speakers
3) Sony Internet TV (I forget the number, 35", very recently bought)
4) A set top box by Sky
5) An LG TV recording / DVD player (again I can't remember the exact model).
When I plug in just the amplifier and attach the speakers, all is fine.
When I plug any source input into any of the other components (e.g. 5-pin din straight into the 3.5mm speaker-out jack on the TV), I get a ground-loop buzz.
This problem happens whether I try to attach the TV, the LG device or anything else.
I find it difficult to believe that such the illustrious Naim could be the problem, but I'm beginning to think it's a problm with the Amp ... I've changed the wall-outlet lead and the component leads but it's all the same ...
Any pointers on how to eliminate this would be much appreciated.
Thanks in advance.
I'm based in the UK (if that makes a difference from a grounding point of view) and I have the following equipment:
1) Nait 5 amplifier
2) BW 630 speakers
3) Sony Internet TV (I forget the number, 35", very recently bought)
4) A set top box by Sky
5) An LG TV recording / DVD player (again I can't remember the exact model).
When I plug in just the amplifier and attach the speakers, all is fine.
When I plug any source input into any of the other components (e.g. 5-pin din straight into the 3.5mm speaker-out jack on the TV), I get a ground-loop buzz.
This problem happens whether I try to attach the TV, the LG device or anything else.
I find it difficult to believe that such the illustrious Naim could be the problem, but I'm beginning to think it's a problm with the Amp ... I've changed the wall-outlet lead and the component leads but it's all the same ...
Any pointers on how to eliminate this would be much appreciated.
Thanks in advance.