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How to Eliminate Hum or Buzz - ecoustics.com
https://www.ecoustics.com/articles/eliminate-hum-buzz/
If you get your system up and running and hear an audible buzz or hum, the first culprit to look at is either the powered subwoofer or your cable-TV or satellite-box feed at the entry point to your system. First, the subwoofer: unplug the coaxial cable that connects to your powered subwoofer to see if the ground-loop hum disappears.
How to get rid of hum, buzz, and other noises from your ...
https://www.techhive.com/article/582313/how-to-get-rid-of-hum-and-eliminate-other-noises-from-your-audio-and-video-systems.html
So you just unboxed your new entertainment gear, hooked everything up, and you hear a buzz, whine, hiss, chatter, or any number of other annoying noises that have been known to plague audio equipment.
Noise problems caused by audio cable - Shure
https://service.shure.com/s/article/noise-problems-caused-by-audio-cable?language=en_US
When a cable connecting two pieces of audio equipment is grounded at both ends, buzz or hum can be created by undesirable current flow in the cable shield. The cable provides a ground path that is in addition to the hard wired AC power line grounds. This condition is called a ground loop.
How to Fix a Buzzing TV | CableTV.com
https://www.cabletv.com/blog/how-to-fix-a-buzzing-tv
If you’re using a satellite tuner or cable box, each comes equipped with a “modulator.” If it’s poorly manufactured or adjusted incorrectly, it’ll be the source of your buzzing. Placing an attenuator between your box/tuner and the TV will reduce the signal strength that interacts with the TV receiver.
How to find and fix hum in 3 easy steps – PS Audio
https://www.psaudio.com/ps-how/how-to-find-and-fix-hum/
There are two basic types: 120Hz buzz, typically caused by ground loops, and 60Hz hum, typically a result of poor shielding, cable problems, or close proximity to strong magnetic fields. To determine which of these you have, listen to the two examples.
Loud audio hum when comcast box is connected. | Xfinity ...
https://forums.xfinity.com/conversations/nonx1-service/loud-audio-hum-when-comcast-box-is-connected/602daf20c5375f08cd01cbb3
When the cable for Comcast/Xfinity is connected to the system it causes a very noticeable hum/buzzing sound from the amplifiers. I have two set-top boxes and they both do it. Just touching the ground from the coax connector to the system causes this. All my equipment is bonded to a central point as well as all my amateur radio equipment.
X1 Cable box making lound humming noise | Xfinity ...
https://forums.xfinity.com/conversations/x1/x1-cable-box-making-lound-humming-noise/602db104c5375f08cd41f782
I just got a new X1 cable TV box. I found I needed one so I could watch CBS All Access. I got it set up and working, but it makes a very lound humming noise (fan, I'm pretty sure) that does not quiet down when I turn off the power. My old box was quieter and got very quiet when I turned off the power.
Can't figure out what is causing this buzzing noise over ...
https://www.avsforum.com/threads/cant-figure-out-what-is-causing-this-buzzing-noise-over-hdmi.1349670/
1)connect hdmi directly to the tv and see if the buzzing occurs, if not then the receiver is the culprit. 2)if the buzzing still occurs then your HTPC is the culprit or something connected to it, I would take out the surge protector and the power conditioner out of the equation and plug in the PC directly to the wall.
Ground Loops - Eliminating System Hum and Buzz | …
https://www.audioholics.com/home-theater-connection/ground-loops-eliminating-system-hum-and-buzz
Common Problem #1: Check to see if you have a heavy power cord or an outlet in the wall that is worn out and will not grip. If the hot/neutral/ground prongs on the plug the ground are making intermittent or light contact with the tang on the inside of the outlet, it can cause a hum through the system.
HDMI line noise | AVS Forum
https://www.avsforum.com/threads/hdmi-line-noise.1831650/
The noise is traveling over the ground on the HDMI cable. Its not unusual for TVs to dump noise via ground, so that's a place to start. Since everything connects through the AVR, ultimately the AVR is at fault. You could try using a HDMI cable with ferrite collars at both ends to connect the TV, might or might not make a difference.
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