Question about Creative Labs MegaWorks THX 550 Computer Speakers

2 Answers

Creative cambridge sound work megaworks thx 5.1 550

Got this problem few days ago.All the speaker and woofer play very softly and with very bad clipping sound.
Open up the woofer and found a slightly loose elect power cap on the power supply.It is the only problem with the Speaker or there's more part need to be replace?

Posted by on

  • adamni Jun 25, 2008

    OK after checking the speaker.I found that the loose elect cap is blown.Chamge to a new cap but the problem still the same.PLS HELP

  • paxx Aug 29, 2008

    I have same problem problem with my megaworks speakers it started when my fuse was blown then I accidentally changed the blown fuse with a much higher rating when i power it up again i hear a poping sound inside the sub woofer but there is still power. Then i wondered why the fused didn't blow up. It was then that I realized that I accidentally used a higher rated fuse. I opened the woofer and found one rectifier got blown I replaced it whith a new one which I got from a local electronic shop but unfortunately I still have the same result. my megaworks work but the sound is so low with static. even you set the volume to maximum. It looks like we got the same problem I hope you got yours fixed. and you can let me know of how can i fix mine i got this speaker more than 4 years it didn't have problems ...I love this speaker I hope I can get it fixed...I'm glad I found your post at least I can have this as my reference...

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I lost my Creative cambridge sound work megaworks thx 5.1 550 cable.can i use any other cable?

Posted on Aug 23, 2008

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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 THX550.to 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.


Creative cambridge sound work megaworks thx 5.1 55 - 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 reCreative cambridge sound work megaworks thx 5.1 55 - 3_12_2013_8_10_00_am.jpgg 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 mCreative cambridge sound work megaworks thx 5.1 55 - 3_12_2013_9_02_39_am.jpg 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.



Posted on Mar 15, 2013

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1 Answer

Sound only coming from 3 of 6 speakers


A 5.1 sound card will give output in all channels only if the audio being played is also 5.1.

Normally out of 6 Speakers only 2 front and sub woofer will play sound, in case of a DVD or Movie which has 5.1 encoding, all 5 will come alive.

Also, Dolby Prologic II and Dolby Digital will convert a 2 channel input into psudo 5.1 enviornment but Dolby has to be in hardware or speakers or Receiver.

Jan 21, 2014 | Creative Labs MegaWorks THX 550 Computer...

1 Answer

Megaworks 550d doesn't switch on


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 THX550.to 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.



Nov 14, 2011 | Creative Labs MegaWorks THX 550 Computer...

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 THX550.to 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

Woofer 4650 carcit digram


Establishing computer speakers includes networking to the devices from where media from be derived either as computers stereos of media players. First, the speakers require connection established between each component sound producing device that has an impression in generation capacity. Second, the speaker device have a box usually the woofer as central area with power cuicuit features. Connectable cables are power cuicuit related expected to extend from the woofer to the power outlet. Also, the woofer board would require as last connectivity, the cable attacchment to the devices that produce sound either as stereo music medis players, digital media displayers among mentionable media devices.

Feb 14, 2011 | Creative Labs MegaWorks THX 550 Computer...

2 Answers

I have creative 2.1 channel with sub woofer and 2 speakers (left&right) all of sudden my right speaker is not working left only working then I pluggeg right speaker to left speaker jack in sub...


I have a similar reoccuring problem with the left channel on my speakers. All of a sudden, while playing music or whatever, the left channel jusr dies. Turning the system off and then on again from the conrol unit does not remedy the situation. By chance, I discovered a workaround to get the left channel working again: Push the main power switch of the subwoofer until it almost switches off and then release it so that the power is never actually switched off. Now a click is heard in the system and the left channel comes alive again. This is quite annoying and seems to have something to do with switches in the subwoofer. Low quality components may have been used. I 've been thinking of getting another 2.1 system, but it's not easy to find one... Maybe I should open the subwoofer box and go through the switches and possibly hardwire some connections...

Jun 27, 2010 | Creative Labs MegaWorks THX 250D Computer...

1 Answer

I lost the original speaker cable of my Creative speaker Megaworks THX550. Will it work without it


If you have another that will fit the connections and similar to the other ones then it should work..Hope this helps.

Sep 05, 2009 | Creative Labs MegaWorks THX 550 Computer...

1 Answer

Cambridge megaworks 250D won't power up.


Yes, Hi there, as junk996 say, check for the FUSE , and carefully see if burn, or something is bad waired, other than this, if you can RMS the unit is better, or with warranty.
If not, check with s tech guru , for open the panel and check cables, or broken wires. (board inside the sub)
good luck!
Open Sky+

Jun 20, 2009 | Creative Labs MegaWorks THX 250D Computer...

2 Answers

My creative megaworks thx 550 does not power on anymore


ok, so far, you said you checked the power cables and switch and they seem ok. But i have run into a simliar problems with some equipment i use. Sometimes a plug may go out of a strip, but not take out the entire strip( have that problem with a power strip right now actually, in the process of fixing that)

Also, im not sure what kind of Cabinet you have, so i dont know what to really suggest other than to find either the model of your cabinet and pull up the building spec's on it, if it comes with its own cabinet or contact the manufacturer.
Without having either a picture or name and product number. I dont feel i can really help otherwise with the problem.

Please be more detailed. I would be glad to help all i can, but more details will be required

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Yes,
there are many cables availabe in the elcetronic market that you caqn upgrade to a latest one. please not down the model number of the creative and visit a elctronic shop.

hope this help, thanks for using fixya!

Jul 04, 2008 | Creative Labs MegaWorks THX 550 Computer...

1 Answer

Digital out peters with odd blipping noises then stops outputing.


Hello there
First things first:

* this is a creative labs speakers models sub problem**
if you have warranty I suggest you use, Creative is alert on this kind of pop up sounds and others, concerning the subwofers.
time to RMS, or fix on house or other person who can change some resistors on the SUB.
other than this, ...just change for CREATIVE 7800 speakers, are good, and they correct this issue on this ones, I got it and I have 3 years with them and no problems.
good luck

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