If removing the TV cable cures the hum, then that's the cause of the problem.
Ask the cable company for an isolated outlet, or you can buy a suitable unit from your local TV dealer. What's happening is that you have a voltage difference between the incoming cable (which is earthed at the cable company's junction box in the street), and your local system. The current flowing from the one to the other is what causes the hum. The isolated outlet stops the current flowing. Incedentally, I used to do A/V installations and a large bugbear was unislated cable boxes, not only because of the hum, but in bad cases you could get a nasty belt if you happened to touch the feeder and the socket at the same time! -- rgds LAurence <>< ...What matters is not the length of the wand, but the magic in the stick ---Taglines by Tagzilla (tagzilla.mozdev.org)
