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PureChaosX

XBox Audio Buzz/Hum When Using Component Cables

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As the title says, I have an Xbox with an incredibly annoying buzz/hum problem.
 
The buzz comes from the speakers of the TV, not the Xbox itself. And only occurs when using the component cables. When using composite cables, the audio is perfectly fine. Haven't tried SCART as I do not have the cable.
 
I'm pretty sure this issue wasn't an issue just a few months ago. I've tried using different power cables, different power sockets (in case of grounding issue)... I think SOMETIMES it depends on what game is being played whether the buzz appears.
 
My Xbox is softmodded, with the only physical mod being a new SATA HDD using an HDD to SATA adapter. Is this a possible cause? The only other thing I can see are three capacitors that LOOK like they are bulging, but no leaking yet. The three caps in question are right below the CPU heatsink, labelled C3E2, C2E5 and C1E1.. I've attached a photo to show the caps. The photo isn't mine, I found it on Google images but it's identical to mine.,
 
Are these caps related to audio, or are they related to something else like power?
 
So the question is... does anyone out there have any ideas as to the cause of a buzzing noise with component cables that probably wasn't there a few months ago?

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maybe there's breakage inside your component cords? my stereo Y splitter was doing that recently

try wiggling/bending the wires around while the buzz is present

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Those capacitors need to be replaced.  Bad caps can cause all sorts of weird symptoms happening elsewhere in the system when the power supplies are not properly filtered.

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FOX: I tried that this morning, but no difference. Buzz still occurs.

JOHNX64: I can only assume.. yes?It's the only set of component cables I can find anywhere for the OG Xbox, they're all over eBay. I can only assume that they are Chinese in origin.

KAOSENGINNER: I'll replace the caps as I did intend to do. Not sure if it'll make any difference, but since I plan to use my Xbox for a long while, it'll be a good idea to replace.

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Change the three caps to see if fixes, these caps are meant to reduce or stop electrical interfierance and loose their capacity after many years, do you have model 1.4? These boards are more prone to this.

 

Actually changing these caps should be always addressed as main maintenance of these motherboards as they are getting 15 or more years, and these caps are cheap, problem is having soldering skills.

 

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I have some more caps coming soon, then I can change them and see if it makes *any* difference. To be honest, I doubt it though... I tired the component cables on another Xbox (revision 1.1, mine is a 1.4 or 1.5) and the buzzing is still there, so the possibility that it's the cheapo component cables looks solid.

Edited by PureChaosX

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VIGGEN66: I can try a different TV tomorrow. Though I do not believe my TV is the problem. I discovered the buzzing when I plugged the Xbox into an Elgato Game Capture and I could hear the buzzing from the preview window. It was much louder than the TV, which I had to turn up to hear the buzzing. So it occurs when plugged into a capture device and the TV directly... which is why I further believe the component cables are the issue.

 

MAMEPLAYER: New caps are on the way... eventually. Then I can see if they make any difference.

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Calm down there... lol, don't worry. Those aren't MY capacitors. It's just a photo I found to show which caps I'm talking about. Mine are bulging.. but not leaking... yet.

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Quick update: Changed the three caps a few days ago and the buzz is still there. So I'm going to definitely say that the cables are to blame for the noise. I may end up getting a Pound HDMI cable from eBay. I know they don't have the greatest picture quality, for a quick and easy fix and game capture, they'll do the job.

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Was hoping the capacitor replacement would fix it. :(

Can you post a recording of the buzzing sound?

It may be caused by a ground loop issue.  I'm having one myself with my cablebox, TV and Xbox.  There was no 60Hz or 120Hz (ground loop) hum in the background when I was on satellite TV but after I switched to cable there's a definite 60Hz hum that can be heard when the TV volume is turned down it's louder than the program's audio track.  I turn up the TV volume a bit and it drowns out the hum. 

The TV set is an old CRT (SD) model and from the looks of the picture there's more than audio but video problems occurring too.  Most likely has some leaking / bad electrolytic caps in dire need of replacing.

Update: Check out this page for troubleshooting audio hum: Please login or register to see this link.

Edited by KaosEngineer

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Board startup date: April 23, 2017 12:45:48
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