Question about Altec Lansing MX5021 Computer Speakers

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Crackling sound I have an Altec Lansing Mx5021 and just recently I have been getting a crackling sound from the right speaker as soon as I turn on my speakers.I have changed wiring, switch left speaker to right input still get the crackling noise only from left speaker when switched inputs. Also when I plug in headphones to the headphone jack I get no sound from the right side. Tested the headpones on another pc and they work just fine I plugged headphones directly into the PC itself and they work just fine aswell.

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  • 7 Answers

Bad signals

Posted on May 26, 2013

  • Danny Cox May 26, 2013

    How can I fix the bad signals?

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6 Suggested Answers

6ya6ya

6ya staff

  • 2 Answers

SOURCE:

Hi there,
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Posted on Jan 02, 2017

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Anonymous

  • 277 Answers

SOURCE: Sub Woofer does not work

hi there are fast checkings for you: Quick Connect Card http://www.alteclansing.com/downloads/641QCC.pdf manual: http://www.alteclansing.com/downloads/641_MAN.pdf is the system working fine exept the sub? my guess: the headphone jack works fine then the speakears are too if soo then the sub amp is bad or some connection is torn try opening the sub and see if everything is hooked right and if soo then the amp is the problem every electronics shop can fix this good luck

Posted on Mar 21, 2006

Anonymous

SOURCE: My Altec Lansing Speakers aren't working

Try rolling back soundcard drivers. I had the same problem when Win XP updated my soundcard drivers.

Posted on Jan 16, 2007

Anonymous

  • 64 Answers

SOURCE: No sound from headphones connected to speaker

I may be too simple of an answer but that would happen if the headphones weren't plugged all the way in. If there is a bend in the connector and it's hitting the speaker they may not be plugged in all the way.

Posted on Mar 28, 2007

Anonymous

  • 171 Answers

SOURCE: Compaq Presario v2000 ALTEC LANSING speakers not working

Go to "Start", "Control Panel", Administrative Tools, Computer Management, click on "Device Manager" on the left hand side and look on the right hand side. See if you have a yellow exclamation next to the "Sounds, Video and Game Controllers". If yes, double-click on the line with the exclamation and then click on the driver tab at the top. Click update driver and when it asks if you would like to to check the internet for updated drivers, tell it yes, this time only and continue. After this process, it should either download and install a new driver for your sound card or install the one that was shipped with your computer. If this does not work, please let me know and we will check the next possible problem.

Please remember to rate this solution.

Posted on Sep 24, 2008

Anonymous

  • 10 Answers

SOURCE: Altec Lansing computer speakers , power requirements

You have to find out what the speakers are rated at then go form there. There is usually a placard or sticker on the back that says what watts and voltage they are rated at. Then you have to find out what plug goes in. Or you just buy an OEM plug

Posted on Dec 06, 2008

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1 Answer

Altec lansing mx5021 pls. give the 9pin wiring diagramthe the color code 9pin going to mainboard.


If you wish to get some details; visit the site linked here. Pull up older posts. Surf the site with patience. http://electronicshelponline.blogspot.com/
Type in the brand name of your device, in the search box [at the top right] of the display window and the Search will start at once as you type in, and will show you all the related posts. It will make surf easy.

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Sounds like you might have a wire loose at the other side of the controller. This is a easy thing to find out. Just unscrew the side screws that hold the back board to the cabinet. Don't unscrew the screws connected to the speaker wire clips unless the back doesn't come off. Just look for a disconnected wire at the controller jack then put it back. If there is no loose wire then you might have a bent female contact at the outside of the controller jack. You would have to look for this looking into the holes where you plug the cable into the controller jack. If you see a bent contact then use a thin nail of ice pick and insert it into the hole where the bent connector is to try to re open the contact so the cable can slip into it easy. Don't forget to unplug the power first.

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The transformer of my sub-woofer is burnt. When i take it to the repair shop, they say that the transformer is not available. I badly need to fix the speaker as i love them very much and the new ones are...


Sub woofers have small amplifiers , not transformers. The amplifier is removable and replaceable. The The overall size and the output wattage are the spec's you need . The output wattage is on the label which is attached somewhere on the speaker. You do NOT need to replace the amp with the Altec Lansing brand. Have you contacted Altec Lansing to purchase a replacement Amp? That's where I would start. If they cannot help you I would Google replacement amp sub-woofer, Altec Lansing model MX5021.
good luck

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This is the only place i can find that still stocks this old model of speakers:

http://www.buyregalo.com/products/Altec-Lansing-MX5021-%28Black%29.html

There are many places that sells the next model, but that model has been discontinued.

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My altec lansing mx5021 speakers problem


The problem I have found is the contact glue between the back panel and circuit board inside the sub woofer. The glue becomes conductive after some time (2 years..!!) and needs to be scraped away from across tracks, you can tell the problem areas as the glue is pale yellow but goes brown and conductive over time. Good luck.
Regards
aj

Feb 18, 2010 | Altec Lansing MX5021 Computer Speakers

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