#ELECTRIC SOUNDWAVE BACKGROUND TV#

That device was selling for nearly $900 when I updated this article. Tripp Lite sent me its model SU1000XLCD UPS to clean up the super-dirty AC in my apartment. Line interactive UPSes are more expensive than the standby alternative, which keep switch to battery power on demand. This type of ground loop isolator, for coaxial cables used with over-the-air antennas and cable- and satellite-TV equipment, can eliminate both visual and audible noise. If there are other people under the same roof, perhaps not. You might be able to make that work-if you live alone.

#ELECTRIC SOUNDWAVE BACKGROUND TV#

The obvious solution for this type of noise is to not use those types of devices while you’re watching TV or listening to music. It might be audible through your audio equipment or visible on your TV, or it might not. Ground loops are hardly the only thing that cause electrical noise pretty much any device with a motor (hair dryers and blenders, for instance), as well as dimmer switches and failing fluorescent fixtures will create this type of interference. If you’re connecting directly to a TV, there are ground-loop isolators available for less than $20. If you’ve traced the problem to the TV signal wire that’s attached to a cable modem or similar (disconnect it and see if the problem goes away) replace that piece of equipment-there’s something wrong with it. Normally-because of the isolation built into cable modems, cable boxes, and similar equipment-this will occur only if you’re connecting directly to the TV or to a video recorder. I’ve received some pretty annoying shocks when handling coax signal splitters. If those methods don’t fix things, the problem could be an over-the-air (OTA) antenna or a cable-TV coax cable that has its own path to ground. There are also DIY solutions online that are less expensive if you have the skills.

Ebtech’s Hum X eliminates ground loop noise safely.

Electric soundwave background