Question about Philips MCD-735 System

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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.

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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.

Posted on Mar 11, 2011

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Posted on Jan 02, 2017

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Benwin 5.1 surround sound system Humming loudly without anything pluged into it!!!


It is sad your having a problem with your
Benwin 5.1 surround sound system
If humming can be heard on all speakers, then it could probably

be on the power supply.


If it is only on the main SUB unit, then it could be the amp itself.

But check for power supply capacitors that supplies voltages to the

amps.Check for amp output DC voltages too.

Oct 04, 2012 | Audio Players & Recorders

1 Answer

When I turn the volume control on my home powered subwoofer, it makes a humming sound, then it stop working


check your connections, RCA, Speaker wires, maybe there is grounded. try other wires which you think in good condition..

Aug 10, 2012 | JBL Audio Players & Recorders

1 Answer

No sound


Hello endow1, hi, try this test, unplug you Logitech audio in plug and touch the input, you should hear a humming sound, Adjust the volume settings to high to hear it. If you cannot hear the humming sound, then there are problems you need to check. Place you speakers near your ear and adjust the volume Up and Down, you may hear a soft hum that should go up and down. Absence of the hum means that the speaker has loose connection from amplifier to speaker driver, or loss of power, check to see if there is pilot light.

Aug 19, 2010 | Logitech X-140 Speaker

2 Answers

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

2 Answers

Humming sound in subwoofer after it's been playing for a while


It sounds like you are describing an earth loop problem. I won't go into detail in this post, but try an isolation test first. disconnect everything from the reciever except the sub and try connecting say a BATTERY powered mp3 player or cd player to minimise connections to the electrical mains earth. you could also isolate things by taking your sub to a friend's house and trying it on their system.
If it is an earth loop use a process of elimination to find out which two pieces of equipment causes the earth loop. then apply filtering.
you can buy earth loop isolation transformers for about AU$26 and I've used one on my sub myself. Theyhave RCA (phono)plugs on each end and they connect inline with the signal cable to the sub amp.

as for the thumping sound it might be the speaker protection circuitry cutting off the amp to protect the subwoofer speaker from damaged. This might be triggered if the earth loop sound is causing the sub amp to overload and clip.

Failing this there might be a dried out overheated electro capacitor in the amp circuit causing the hum. Hav a chat to your local electronics person, who should be able to spot it!
Hope this puts you on the right track
Happy Hunting!

Jan 07, 2010 | Sunfire Audio Players & Recorders

2 Answers

LOUD BUZZING/HUMMING SOUND- CAN HEAR OVER AUDIO


have someone check speaker ground to the TV chassis. Your speakers are picking up reverb from the Video Signal.

Aug 19, 2009 | Vizio L37 Television

2 Answers

Indicator light not working and humming noise


your circuit board is bad not repairable i have the same prob but not kenwood they said it would cost more then its worth.






Jan 03, 2008 | Kenwood 103SW Speaker

1 Answer

Denon AVR-1601 Receiver


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

Nov 21, 2007 | Denon AVR-1601 Receiver

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