Question about Kenwood VR-405 Receiver

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Buzzing in speakers

What causes humming/buzzing in my speakers when receiver is turned on?

its most noticable when i power on tv also

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  • avenueed Jul 18, 2008

    I have a pioneer elite vsx 95 reciever that makes a humm or buzz sound on all channels. (A or B and center channels) Please advise. It didnt always do this. I have tried other power supplies including a dedicated circuit so I know its not from any interference from anything else.


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First, if the buzzing came in gradually, I would suspect the filter caps. If it started suddenly and goes up and down with volume control, I would think it is in signal path - maybe the dsp board.

Posted on Oct 18, 2008

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My AV receiver turns off a couple of seconds after I turn it on. I did what the manual said, unplugged the power source and removed all of the speakers but it continues to do the same thing. Anything else...

you may have a bad Earth power 110 V AC cable connection which makes such hum / buzz even nothing connected..
Check the connections between components and make sure they are secure before proceeding to the next Step. Sometimes, loose connections can cause a hum.
  • Separate the audio cables from the power cables; electromagnetic interference from the power cables can cause stereo hum. Use cable ties to secure the audio cables away from the power cables.
  • Plug in a surge protector to the outlet, and then plug all the components into that surge protector
  • Connect a ground plug to the surge protector and then plug the ground plug into the main outlet. A ground plug is available at any hardware store, and turns a three prong connection into a two prong. Ground plugs help eliminate 60 cycle hum.
  • 5 Connect the ground wire from your turntable to the ground wire connection on the receiver. If this doesn't work, looking on the back there should be a grounding point,

    Unplug your receiver.. Split a wire and attach one of the splits to the receiver where you will see the text, "ground" or something similar. Attach the other end to something metal such as a pipe that goes into the ground. Secure with electrical tape. Plug in.
    connect the ground wire to a screw on the electrical outlet.

    Read more: How to Fix a Hum on a Stereo Receiver '

    Take care and please remember to rate me"AS THUMBS UP" Thanks
  • Jun 20, 2011 | Onkyo TX-SR606 Receiver

    1 Answer

    There is a dull hum in the speakers even when the volume is muted. is this a settings issue or is the tv broken

    Are we talking about TV-speakers or audio system speakers?

    Where are you muting it - on the TV, Cable box or the audio system?

    A standard TV's CRT emits a lot of magnetic energy which could be picked up by nearby audio cables or speaker wire. Increasing the distance between the CRT and speakers or wires will lessen the effect. Nearby power cords should also be avoided or run them at right angles to audio cables to minimize hum.

    The TV's internal speakers should be sufficiently shielded from its own internal componentry.

    I have a problem in my audio rig where I get an audible buzz from all the speakers if I have the wall-mounted variable track lights on. So I listen with other light sources on. Food for thought.

    Dec 09, 2010 | Audio Players & Recorders

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    Speakers are making a humming noise

    If the noise is accross all channels then it's most likely the large electroltic capacitors in the power supply. These filter out the mains hum 50/60hz. There might be two or more they will be the biggest! Even if you can determine only one has gone, it's best to replace them all.

    Jul 12, 2010 | Kenwood VR-407 Receiver

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    When I have my Yamaha receiver and TV on I hear a distinct buzzing hum noise from my main external speakers What could be causing this sound I have turned all other components off"

    Make sure none of the cabling passes near the TV or any source of high electromagnetic fields. If you have track lighting, turn it off.

    Get the TV-related audio digitally from the cable box instead of analog via the TV.

    Jun 14, 2010 | Audio Players & Recorders

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    Humming sound (speakers)when HK AVR is powered up.

    In my case the buzz was only on front speakers. There are 3 capasitors (100uF/25V) very close to the cooling ribs of 3 regulators in the power supply. In my case the C922 was bad.

    Apr 02, 2009 | Harman Kardon AVR 500 Receiver

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    A couple of weeks after initial setup of my brand new Onkyo XT-SR606 receiver, I noticed a loud buzzing noise that starts up approximately 10 min after the receiver is turned on. The buzzing is definitely...

    The "buzz" you hear is a power hum made by the power supply transformer. It's technically called "Lamination hum" caused by the revering of electrical current through the power supply transformer. In some cases the hum can vibrate the chassis causing other loose material to vibrate. If you can, go to your dealer and check to see if other units of this same type typically make a hum this loud, and if not, see if he can solve the problem for you.

    Feb 27, 2009 | Onkyo TX-SR606 Receiver

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    Loud buzzing at the first volume setting

    Check all your wires and make sure that none of the wires that are powering any equipment (including extension cords, power bars, and power cables on the unit itself) are running parallel to any of the audio cables going to your speakers or from your inputs to your unit. This could be what's called AC hum, which is caused when the electrical current causes interference that gets picked up by the audio cables and amplified by your system. Just make sure you move the power cords as far away as possible from the audio cables.

    Jan 08, 2009 | Sony STR-DE345 Receiver

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    One speaker buzz when cold

    It works fine for a couple of minutes the starts to hum. If you turn up the volume it masks the noise but is till audible, also the video switching cuts out. after examining the components I have seen some heat discoloration in the power suply area and believe it to be power for the video board. disconecting the ribbon cable form the video board the hum goes away, and so does any video wich does'nt matter for me because my monitor1.gif does all the HD video1.gif switching. hope this may help with some noise problems.

    Jan 23, 2008 | Harman Kardon AVR 225 Receiver

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    Buzzing from speakers

    sounds like a capacitor is taking a long time to do it's job. You might want to see how much it would cost to repair.

    Jan 13, 2008 | Audio Players & Recorders

    1 Answer

    Buzzing noize

    Have you tried using a different power adaptor? I have noticed with mine that the as the original failed there was a noticeable hum, a new power supply (of reasonable quality) solved the problem.

    Feb 15, 2007 | ElectroVoice RE-1 UHF Wireless Handheld...

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