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. You’ll find plenty of information online that will show you how, but the task requires moderate skill with a soldering iron and similar tools.Ī ground loop isolator for coaxial (antenna and cable TV) cables. If you have the skills, you can build your own hum eliminator for about $10 or $15. There are other products that do roughly the same thing, some of which interrupt the loop in the signal cables, but they’re all expensive as well. If using an extension cord is impractical, you can buy a hum eliminator, such as Ebtech’s Hum X. Look up Les Harvey and Stone the Crows for an extreme example of what can happen with high-powered equipment. You could just “pull the ground” by using a three-prong to two-prong adapter but this represents a potential shock hazard. Self-powered speakers and subwoofers come to mind. There might be occasions where you simply can’t reach the same outlet with a piece of equipment. If you still get hum, see if your antenna or cable wire has its own ground connection. Powering connected equipment from the same AC socket eliminates most ground loops.
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