Question about Televison & Video

6 Answers

Noise coming from cable

This question is in regard to a sound system in a night club. we have no problem with cd players, air tunes, or any number of instruments being run through the sound board. but the cable tv signal has a buzz. the cable is plugged directly into a dvd player, and then rca cables are run from the dvd player to the board. the buzz is audible even if the dvd player is off, even completely unplugged. dvd's, when played, have no such buzz, and are connected to the sound board with the same rca cables.

when the dvd player is unplugged, as i said, you can still hear the buzz (when cable input is selected), unless you disconnect the coax. then, no buzz. thus, i've isolated the source of the noise to the coaxial cable.

how do i get rid of it?

Posted by on

  • soundproblem Feb 09, 2008

    I'll try it- thank you.

  • gbeavers5 Jan 25, 2009

    Hello. I am getting a buzzing through my speakers in my theater. When I unplug the coaxial cable from the back of my cable box, the noise stops. So when I watch movies on my ps3, I alway unplug the cable box. When I watch tv I just put up with the noise. Is there an in line fliter that I can use. I think that I may not haveused magnetically sheilded speaker wires when I ran every thing in the walls and ceilings

×

6 Answers

Hd a

Posted on Feb 11, 2008

  • Level 2:

    An expert who has achieved level 2 by getting 100 points

    MVP:

    An expert that got 5 achievements.

    Governor:

    An expert whose answer got voted for 20 times.

    Scholar:

    An expert who has written 20 answers of more than 400 characters.

  • Expert
  • 90 Answers

I agree with all that has been suggested.. The problem is that the cable is not grounded properly so it works as an antenna picking up 60 cycle noise which gives a nice low frequency hum... make sure the cable goes through a ground block and that the ground block is attached to a good ground or to the ground wire of the rest of the system. A shorted cable would not give you anything.

Posted on Feb 10, 2008

  • Level 3:

    An expert who has achieved level 3 by getting 1000 points

    All-Star:

    An expert that got 10 achievements.

    MVP:

    An expert that got 5 achievements.

    Vice President:

    An expert whose answer got voted for 100 times.

  • Master
  • 979 Answers

What happens when you run the cable directly to the mixer? Have you tried that? Also, it may not be a problem with the cable but rather a "ground loop" generated from the cable box or TV. My guess is that the cable box or TV do not use the same electrical outlet. This is where many hum problems develop right form the get-go. I would defintely lift the third connector from all parts involved, one at a time, until the problem clears. I seriously doubt that you have a bad wire if you are able to get sound AND buzz through this hook-up...accordianman

Posted on Feb 09, 2008

  • Level 3:

    An expert who has achieved level 3 by getting 1000 points

    All-Star:

    An expert that got 10 achievements.

    MVP:

    An expert that got 5 achievements.

    President:

    An expert whose answer got voted for 500 times.

  • Master
  • 3,130 Answers

It sounds like the installation of the cable wire from the main pole is not grounded properly. In an installation such as this, there should be a coax grounding block that is grounded to earth ground outside somewhere. I have seen the ground come loose on these blocks and cause your problem. I have also seen taking a ground lift and plugging it into a grounded plug eliminate buzz in a sound system. That would work only if your sound board has a three prong plug. What I mean by the ground lift is that small grey adapter you use to adapt a 3 prong plug to a two prong plug. Good Luck

Posted on Feb 09, 2008

  • Level 3:

    An expert who has achieved level 3 by getting 1000 points

    All-Star:

    An expert that got 10 achievements.

    MVP:

    An expert that got 5 achievements.

    Genius:

    An expert who has answered 1,000 questions.

  • Master
  • 1,694 Answers

Coax cable from cable company has a small negative voltage
on it that can cause buzz.....input to DVD player is for what
purpose ? to transfer the signal to a clean output for the soundboard....try a different isolation unit like an A / V switchbox
for cable in = audio right & left out........... or temporarily try a VCR input for better isolation...............................T.

Posted on Feb 09, 2008

  • Level 2:

    An expert who has achieved level 2 by getting 100 points

    MVP:

    An expert that got 5 achievements.

    Governor:

    An expert whose answer got voted for 20 times.

    Hot-Shot:

    An expert who has answered 20 questions.

  • Expert
  • 82 Answers

Have you tried a new coax it could be shorted some you might want some heavy duty cable and good connectors

Posted on Feb 09, 2008

1 Suggested Answer

6ya6ya
  • 2 Answers

SOURCE: I have freestanding Series 8 dishwasher. Lately during the filling cycle water hammer is occurring. How can this be resolved

Hi,
a 6ya expert can help you resolve that issue over the phone in a minute or two.
best thing about this new service is that you are never placed on hold and get to talk to real repairmen in the US.
the service is completely free and covers almost anything you can think of (from cars to computers, handyman, and even drones).
click here to download the app (for users in the US for now) and get all the help you need.
goodluck!

Posted on Jan 02, 2017

Add Your Answer

Uploading: 0%

my-video-file.mp4

Complete. Click "Add" to insert your video. Add

×

Loading...
Loading...

Related Questions:

1 Answer

Cd plays but no sounds comes out


Depending on the radio, if you didnt touch your radio when you installed GPS then the CD player could be bad, check the manufactures website for troubleshooting tips then check google, also next time post the brand and model number so we can know what you have to help, hope this helps you.

May 31, 2013 | Car Audio & Video

1 Answer

I have a Technics SL-PG480A CD player. It won't play CDs down loaded from i tunes. These CDs will play on another newer Sony. The Technics plays other commercial Cds without problem both before and after...


This player will not play either MP3 or MP4 encoded CdRs. It is a good 18 years old now and such things were unforeseen back in the day. The newer sony may well be MP3 compatible. You could convert MP4 to standard audio types on your pc via any number of software applications.

Dec 23, 2010 | Technics SL-PG480A CD Player

2 Answers

My sound and leisure night scene 80 disk jukebox won't play any cd?


Hello,

I would contact Sound Leisure in the UK for available service engineers
to repair your jukebox.
www.slretail.co.uk/soundleisure

Regards
Alan Hood
ami-man
UK

May 29, 2010 | Wurlitzer Jukebox CD Player

1 Answer

Noise coming out of speakers connected to Denon AVR 1908


Check for nearby wireless devices and move them away. -If the audio output from the source device (i.e. DVD, CD player) is digital (i.e. PCM, DTS or Dolby Digital) you're on your own. I'd be willing to bet the output is analog (red and white RCA), because the "beeps" and "exploding sounds" you describe seem like it could be caused by interference. Try replacing the cables. Otherwise the issue is probably with your receiver.

Aug 11, 2009 | Denon AVR-1908

2 Answers

Truck Radio/CD Player, no sound coming out of speakers


Have you check the mute mode, maybe it is in mute mode.

Jun 01, 2009 | 2003 Chevrolet Avalanche

1 Answer

Cdj mk3 jog


Hi,

Does the jog wheel lcd light up ?

Regards.

Paul.

http://www.audiovisualservices.info/

Dec 27, 2008 | Pioneer CDJ-1000 CD Player

1 Answer

Tuner works but when i play a cd it shows that it is playing but no sound comes out this cd player is brand new


Take it back for a refund or replacement, If you have speaker output on the tuner,their is no reason or why it shouldn't give you tunes when you insert a CD.
Regards, Paul

Jun 12, 2008 | Kenwood Car Audio & Video

1 Answer

Technics SL-HD350 Cd Player - Sound problems


This maybe due to overheating of some Sort.
Try taking it out of where it is where theres a good flow of air.
Then try running a cd.
Try Putting in a Cleaning cd, this maybe a fault with the laser.

Regards

Dec 31, 2007 | Technics SL-PG480A CD Player

1 Answer

I need to get my sl-dz1200 back to business ascap


What's wrong with them?

If your in NYC, give the following a call:

TWEAK AV LAB
195 Morgan Ave
Brooklyn, NY 11237
1.877.357.7677
www.TWEAKREPAIR.com

Dec 29, 2007 | Technics SL-DZ1200 CD Player

1 Answer

Something spinning


1. Check all cable connections to make sure they're secure. 2. Replace the cable connecting the CD unit to your receiver. 3. Clean the contacts on the player and receiver with electronics-grade contact cleaner. good luck

Jan 06, 2006 | RCA RS2041 CD Shelf System

Not finding what you are looking for?
Televison & Video Logo

Related Topics:

625 people viewed this question

Ask a Question

Usually answered in minutes!

Top Televison & Video Experts

The Knight
The Knight

Level 3 Expert

70943 Answers

Electro Med Services...
Electro Med Services...

Level 3 Expert

6694 Answers

yadayada
yadayada

Level 3 Expert

66126 Answers

Are you a Televison and Video Expert? Answer questions, earn points and help others

Answer questions

Manuals & User Guides

Loading...