Question about Sony DAV-C770 System

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Strong humming sound coming from the over head speakers

As the volume is turned up, a strong hum comes through the overhead speakers. If I disconnect the top white and red connections in back of the unit, it goes away, but so does the volume in the above speakers. What is wrong?

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Are you running a stand alone dvd player or is it built in?check all plugs for sources coming ineg.dvd,vcr,xbox etc,if one is not in all the way,this will cause a hum.

Posted on Oct 21, 2008

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Posted on Jan 02, 2017

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1 Answer

When turning up the volume speakers start to humn. Tried on all inputs still humming. Sound comes out but humming is there. Humming only stop when turning the volume all the way down.


You need to add a "ground lift" to the power cord to your system. What you're hearing is a 60 cycle hum (electricity) from house power.

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I have an Onkyo TX SR 700 receiver, Bose Acoustic Mass 10 speakers, Panasonic Viera 52" flat screen with my computer connected to the receiver. The computer uses a high end sound card. The flat screen...


Hi, what causes hums from speaker is when there is no ground shield from either the power supply or from the cable you plugged into the socket from the power supply.

So you will need to check that out and replace untrusted cables for connection..

If after doing this troubleshooting exercise, you will now need to test the speaker with another set to be sure the humming sound is not coming from there.

I guess that will Do.

Have a nice day...

Feb 18, 2011 | Bose Acoustimass 10 Series IV Home...

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I stopped having sound coming from the speakers. I checked and we are not on mute, and the volume is turned up high.


Make sure all your connections are tight and you have power to your speakers...Then go Start>Control Panel>Sound and Hardware>Sound, after you are in here make sure that your speakers are selected as default device.
Hope this helps, pls rate

Mar 19, 2010 | Proview Computers & Internet

1 Answer

I HAVE A Z-2300 NO SOUND


Is it plugged in with a 3.5 millimeter jack? If it is, pull it out of the computer and press you thumb on the tip, if no humming noise comes out, your speakers are probably blown.

However, if a humming noise does come out. Please check to make sure the volume on the computer is turned up/unmuted, the software's volume is turned up/unmuted, your sound card driver is installed (Right-Click "My Computer" -> left click on properties -> Click on the Hardware tab -> click on "Device Manager" -> Click the "+" next to "Sound, video and game controllers" and make sure there is no Red "X"'s or yellow "!"'s.

If you do get a hum, and you do have everything set up right in Windows, try a different pair of speakers or head phones. Your sound card might be fried.

Also, make sure you're plugging the speakers into the correct port on the computer (It's usually a washed out green port"

Mar 01, 2010 | Logitech Audio Players & Recorders

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There is a loud hum when volume is on low to high


go to control panel
sound and audio devices
voice
under voice recording clk volume and mute the mic phone...........
or
some how your mic is conflicting with speakers. Keep your mic away from your speakers..

Do reply if this woks

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Loud humming buzzing sound coming from subwoofer


make sure you have the speaker connection right if you do then it is a ground problem try plugging it in a different outlet

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1 Answer

Gemsound power speaker pxa105


First,
Disconnect any input cables from the amp. Turn down the volume controls and disconnect the speakers. Power back on. If you still blow fuses with nothing hooked up, have the amp fixed.
If the fuse holds, shut down and connect the speakers, leaving the volume controls down. Power up and see if your fuse holds. If you have hum, an output transistor is most likely shorted. If you have no noise, SLOWLY turn up the volume controls and listen for the hum. If all is quiet, turn down the volume controls and connect your input cables and turn the volume back up. Noise? check your cables!
Mister Phil

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Check capacitors in power supply......also check for over-heated
resistors..all 1 ohm.....replace if cooked...................T.

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1 Answer

Hum & noise coming from the speakers


IF it was too load you probable blew the speaker Just disconnect the side that is making noise or is it both side?

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