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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.
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 have had quite a few different cable boxes in my years at Comcast. My living room box is about 3 feet away from where we hang out and I am not able to hear it. We can help you to replace the cable box by shipping a new one to you so we can get rid of the fan noise. I also want to look into the replay issues you are seeing.
Solved the hum from Comcast cable instantly
https://www.amazon.com/review/RVJC8XRTMF19D/
Problem: When I installed Comcast cable TV box, when I plugged the HDMI cable into the Marantz, I got a loud 60 cycle hum. Volume control did not make it louder or quieter, and it happened when the Cable box was plugged into AC power or not. With only the coax plugged into the cable line and the HDMI cable plugged into the preamp I got the hum.
Cable box causing hum. Need to fix? | AVS Forum
https://www.avsforum.com/threads/cable-box-causing-hum-need-to-fix.1447566/
To clarify, there is no ground problem per se. 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 path to the system that must be isolated.
Eliminating System Hum From Cable TV Box | Steve …
https://forums.stevehoffman.tv/threads/eliminating-system-hum-from-cable-tv-box.137091/
You can get an isolation transformer (around $10) a small connector that connects the the cable to your box, but even with that, I still got a hum. I called Comcast bitched loudly and had them come out to properly ground their cable that comes into the house. That worked. Kayaker, Jan 12, 2008. #2.
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
The first is to never run a power cable across or near audio or video signal cables, including antenna wires. Modern signal cables are well shielded, but …
How to find and fix hum in 3 easy steps – PS Audio
https://www.psaudio.com/ps-how/how-to-find-and-fix-hum/
Yes, to Steps 1 and 2. If the answers are yes to questions one and two, it’s likely that one of your sources (like a CD player, turntable, video feed), is the source of hum. Remove that piece from the receiver, amplifier, or integrated and the system hum should now be gone.
Help! Humming noise coming from new Cambridge Audio …
https://audiophilestyle.com/forums/topic/30222-help-humming-noise-coming-from-new-cambridge-audio-cxn/
Q2: HDMI inputs - 1 is hooked to the cable box (Comcast CI AX013ANM), 2 is hooked to the Blu Ray (Samsung BD-F5700 Wi-fi Blu-Ray), 3 is hooked to a Raspberry Pi. CD Aux output is hooked through an RCA patch cord with a phono plug into the CXN.
X1 TV Box Comparison - DVR vs. Non-DVR - Xfinity Support
https://www.xfinity.com/support/articles/x1-hub-vs-companion-box
There are a few key differences between the DVR and the non-DVR TV Boxes. All recording is done from the DVR. X1 DVR connects to the Comcast network to buffer live TV and access certain applications. As a result: The ability to pause and rewind live TV, recordings and Xfinity On Demand programs varies by TV Box.
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