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Cable box causing hum. Need to fix? | AVS Forum

    https://www.avsforum.com/threads/cable-box-causing-hum-need-to-fix.1447566/#:~:text=If%20disconnecting%20the%20cable%20stops%20the%20hum%20then,using%20unbalanced%20audio%20connections%20that%20results%20in%20hum.
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Cable box causing hum. Need to fix? | AVS Forum

    https://www.avsforum.com/threads/cable-box-causing-hum-need-to-fix.1447566/
    The issue is actually caused by grounding that's electrically correct, it's the inherent deficiencies of using unbalanced audio connections that results in hum. This link explains why. In your case the cable box/cable ground adds one additional ground …

How to get rid of hum and other noises from your audio ...

    https://www.techhive.com/article/582313/how-to-get-rid-of-hum-and-eliminate-other-noises-from-your-audio-and-video-systems.html
    There are really only one or two hard and fast rules for cables and noise. The first is to never run a power cable across or near audio or …

How to find and fix hum in 3 easy steps - PS Audio

    https://www.psaudio.com/ps-how/how-to-find-and-fix-hum/
    If the hum is caused from the cable TV connections, or internet connections, you can use PS Audio’s HumZero. If it is not a cable TV causing the problem, it may mean there’s a power ground loop between the two pieces of equipment. You can test for this by using an AC “cheater plug” that lifts the third wire ground from the AC receptacle.

How to isolate cable box to eliminate hum - AudioShark

    https://www.audioshark.org/vibration-isolation-devices-26/how-isolate-cable-box-eliminate-hum-11774.html
    Turns out the Xfinity box is the culprit, just sitting there with its hard drives turning, it emits a little white noise but also this annoying 125 hz hum that seems resonates with the cabinet. Any ideas how to isolate this device so I don't get the hum? —Bob V.

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