Paul G. wrote:


I had considerable trouble with a cable feed causing hum and bizarre
behaviour with a Linn CD player and power amp. Does your hum disappear
when you disconnect the cable RF connector? If it does, the hum may be
a result of powerline frequency hum currents coming through the
RF/coax grounding.

Interesting.

I've actually got two problems. Yes, there is definitely an earth loop with
the cable feed but there is also definitely a problem with the amps when
the TV etc is disconnected. I've got audio transformers between the TV and
amp to try to keep TV/cable induced nastys out of the hifi. Before I had
this there were sufficient nastys to blow the FETs in the mute circuitry of
my tuner.

Pete

--
http://www.petezilla.co.uk