Question about Altec Lansing ACS 48 Computer Speakers

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Parts for the acs-48

I have had problems for about a year on and off with the 6 pin plug, finally it quit working completely. I narrowed the problem down to the sung wei 08v0-a board and I need a new one. Anyone have one for sale?

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Re: Parts for the acs-48

Did you solve your problem? If not, I have a set that I am not using.

Posted on Apr 14, 2010

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Re: Parts for the acs-48

Hello Transparent
I think is better to contac Altec Lansing, they give more details, on your particular board, and support, prices and warranty.
good Luck

Posted on Jan 05, 2008

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Re: Parts for the acs-48

Please contact on my mobile number;-9916081113 or 9886564318 or 9886381292 or 9980280729

Posted on Jan 04, 2008

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1 Answer

My megaworks 5.1 550 gets no power... I dont know why. when i plug in power cable, there is no power...

Step 1:

i had same problem with my magaworks 5.1 thx550.
i have tried to find solution in web but it was only one which voltage sense resistor 2Mohm track in PCboard was damaged.
after check PCboard in my megaworks thx 550 i found that tracks are quite well and voltage sense resistor is well too.

Step 2:

REPAIRING PROCEDUREin below items there are repairing procedures that i did with my access to BCboards it is required to remove electronic boards from woofer case.
1- remove cover of woofer.2- remove woofer speaker from case by cutting and marking connected wires.
3- remove all Philips screws around cover and remove electronic parts smoothly, care about glues around power cord.4- remove and disconnect power supply board from other parts.

3_12_2013_7_45_42_am.jpg5- replaced switcher TOP234Y and capacitors C102, C206, C205 and D10 as below photos.3_12_2013_8_08_28_am.jpg6 check all of related tracks in repairing area.3_12_2013_8_10_00_am.jpg

3_12_2013_8_48_15_am.gif7- now it is time to re assemble electronic parts very carefully and prepare for test. it is better to use isolated transformer and put a lamp in serial to protect PCboard against short circuit. if green LED (POWER LED) is on it means that every thing is O.K.
8- in this step all of electronic parts should return back to case and reconnect sub woofer connections.3_12_2013_9_02_39_am.jpg

Step 3:

after replacing damaged parts my THX 550 is working well maybe for next 10 years.
i hope above mentioned instruction can be useful and helpful.

Sep 15, 2011 | Creative Labs MegaWorks THX 550 Computer...

1 Answer

The speakers quit working/what do I do?

Make sure that it is the speakers that stopped working by unplugging them from your computer (or whatever you have them plugged into), and plugging headphones into the same jack that the speakers were plugged into.If the headphones work, you have confirmed that the problem is with the speakers. If the speakers use an AC adapter (black plastic cubical thing that plugs into the wall), then you might try getting a replacement AC adapter with the same output (AC or DC), voltage, polarity (which side is positive, and which is negative), and connector. If the speakers plugged into a USB port for power, your USB port may have turned itself off. In that case, reboot the computer to see if the USB port will turn back on.
If none of this works, you have to buy new speakers.

Apr 18, 2011 | HP JBL Platinum Computer Speakers

1 Answer

My logitechh x-530 speaker system just quit, all of it. i moved my computor location from across the room and it no longer worked. i have connected and re-connected but no luck.

Just try testing the fuse in the 3 pin plug first, off chance it may have gone. Then, if that shows as OK, and you feel confident, remove the back of the Woofer and make sure that the AC wires have not come loose (can't remember if there is an inline or separate fuse in the woofer, if there is, i'd check that

Dec 29, 2010 | Logitech X-530 Computer Speakers

1 Answer

Ah i have altec lansing acs 45.1.the problem is i dont know how to wiring.can u pls help me.ynx

ok first plug run a1/8 two sided head phone jack[male] from the computer to sub woofer you should have two imput jacks makes no differance ok the left sat speaker has a 6 pin din plug round looking plug insert into subwoofer and then plugac cord in the wall you should be good togo "note right sat speaker is attached to the left good luck

Nov 16, 2010 | Altec Lansing ACS 45.1 Computer Speakers

2 Answers

My speakers wont work, everything is plugged in, and nothing will still not work.

I know this was old query, but i recently had a problem with sound cutting out. Discovered if I jammed a spoon between the two cables input to the sub box, I could get sound back. Today finally got around to opening it up and discovered the soldering on both sides of the 8 pin anchor leads were broken. The pressure of the spoon jam allowed the connection to "seat" temporarily. Fixed with 25w iron and 60/40rosin core 0.032" solder. Wicked the old broken mess off and applied dab of new shiny complete solder. Good Luck all.

Sep 11, 2010 | Altec Lansing Computer Speakers

1 Answer

No sound coming from ACS 48 Altec Lansing speakers

Hi janros123 - I don't know if this will help - I have a subwoofer ACS48 that needs satellite speakers (they are blown). Want to buy my subwoofer or sell your satellites? I will buy your broken subwoofer, too...thanks, and good luck! Greg illdooyoo at gmail dot com

May 16, 2009 | Computer Speakers

1 Answer

Crackling sound

I am assuming you have the ACS 48's as your question was on this page. If not, these tips may work anyway. Firstly, the bottom plastic stands on the ACS 48 tend to rattle obnoxiously after awhile. Simply glue them on or somehow make it so they don't rattle. You can remove them easily to see if this is the problem. The face covers can also rattle, take these off as well, and see if that solves the problem.
The second problem I had was related to the tweeter in one speaker rattling also. I took a freshly sharpened pencil, and simply ran it around the far outside diameter of the tweeter between the case and the tweeter. Be carefull here, you could puncture the tweeter. If not deft of hand, have someone do it for you. Hope this helps
Thirdly, and most complicated, one or more of the drivers are blown. Find a used ACS 48 system on ebay, they are fairly cheap, or have the midranges resurounded at an audio speaker rebuilding shop. Not sure what to do if the tweets are blown, but if it were me, and it surely will be the longer I have these, I would take them apart, pull the tweeter, and try to buy new ones of better quailty. Thinking of doing this anyway. lol These are awsome speakers compared to what I hear in stores these days.

Oct 16, 2008 | Altec Lansing ACS 48 Computer Speakers

1 Answer

Woofer Quit

Check the pin connection it is loose or the pins may be bent. Check Connection to sub hold it in tight if no pins are bent and see if the hum stops. Hope this Helps it is what was happening to my set>GOOD LUCK>If pins are bent straighten them>

Aug 13, 2008 | Logitech Z-340 Computer Speakers

1 Answer

Pin connections on Spkr out jack

did you every get an answer for this i could use it now

Oct 08, 2007 | Altec Lansing ACS 48 Computer Speakers

4 Answers

Yamaha YST-MSW10 subwoofer quits after about 10 minutes

This problem can be solved by either of the following:
1/ Modify the PCBA to prevent the auto shut off feature from working. This is done by adding a 20k ohm resistor across pins 1 & 2 on the timer IC6. This resistor will prevent the timer from turning off the amp. To do this, unplug the amp. Remove the 8 screws on the perimeter of the rear of the amp. Carefully remove the rear plate. Disconnect the speaker wires at the speaker and the front panel connection on the main board. Locate IC6 on the bottom of the main board. Solder a 20k ohm resistor (1/4W) across pins 1 & 2. Pin 1 and Pin 8 are noted on the board. Be sure to insulate the leads of the resistor to prevent contact with the board. See picture. Re-assemble in reverse order.
2/ Some 5.1 channel amps allow independent control of the volume for the subwoofer in their setup. Check your amp to see if you can raise the signal level going to the subwoofer to prevent the amp from shutting off. You can then dial back the volume of the subwoofer using the volume control on the front._436.jpg

Aug 07, 2007 | Yamaha YST-MSW10 Computer Speakers

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