Question about Creative Labs MegaWorks THX 550 Computer Speakers

2 Answers

My creative megaworks thx 550 does not power on anymore

All of a sudden the amp in the subwoofer cabinet does not power on. The Green Power LED does not light up.

Checked power cable and switch and seems ok.

Is there a fuse inside the cabinet that may have blown? If so, How do I get to to the fuse to change it? There are many screws on the back cover, which have to be removed to access the fuse?

Any help would be appreciated.


Posted by on

  • Anonymous Dec 29, 2008

    Same problem. No power (and yes I checked the source).

  • Anonymous Mar 22, 2009

    Checked for power lead continuity upto the Power Supply Board (p/n PBMSO360A0420)

    All connectors appear satisfactory.

    Does this suggest a replacement board is required?

×

2 Answers

  • Level 1:

    An expert who has achieved level 1.

  • Contributor
  • 4 Answers

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. 5- replaced switcher TOP234Y and capacitors C102, C206, C205 and D10 as below photos.6 check all of related tracks in repairing area. 7- 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. 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

  • Level 2:

    An expert who has achieved level 2 by getting 100 points

    MVP:

    An expert that got 5 achievements.

    Scholar:

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

    Hot-Shot:

    An expert who has answered 20 questions.

  • Expert
  • 65 Answers

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

Posted on Oct 28, 2008

Add Your Answer

Uploading: 0%

my-video-file.mp4

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

×

Loading...
Loading...

Related Questions:

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

NO power in subwoofer, power light will suddenly not turn on.


I got the same problem yesterday. I just unplugged the power from the subwoofer, then plugged today. Now the lights stayed a little longer then yesterday, but goes out again a little later. So I just unplugged and wait ultil tomorrow then I'll try again.

Jan 14, 2010 | Creative Labs MegaWorks THX 550 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

Megaworks THX 550 does not power up


I was able to repair my sytem using the guidelines from pouakai at (http://forums.creative.com/t5/Speaker-Systems/Successful-repair-of-MegaWorks-THX550-power-supply/m-p...


My system also would not turn on. The problem was on the power PCB - the one with the two large heat sinks attached. I found that the piece of PCB track joining the 2M ohm resistor (connected to the LINE-SENSE pin of the TOP243Y switcher) to the positive output of the full-wave bridge rectifier, was broken. This could have been caused by corrosion from the glue (which covered that section of track). I also replaced the 2M (0,5W) ohm resistor, just incase it was also to blame. The 2M ohm resistor is located under one of the two black heatsinks. I used a short piece of wire to replace the PCB track (from the large filter capacitor next to the resistor) to the 2M ohm resistor. Plugged everything back in, and it worked!


The circuit diagram given on page 21 of the TOP234Y's data sheet was very useful, and helped me understand how the circuit functioned.


I hope this is heplful for others who have this "no power" problem!

Aug 22, 2009 | Creative Labs MegaWorks THX 550 Computer...

2 Answers

Speaker cable


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...

2 Answers

Creative cambridge sound work megaworks thx 5.1 550


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

Jun 22, 2008 | Creative Labs MegaWorks THX 550 Computer...

Not finding what you are looking for?
Creative Labs MegaWorks THX 550 Computer Speakers Logo

1,208 people viewed this question

Ask a Question

Usually answered in minutes!

Top Creative Labs Computer Speakers Experts

Brian Sullivan
Brian Sullivan

Level 3 Expert

27725 Answers

Carlos L. Burgos
Carlos L. Burgos

Level 2 Expert

508 Answers

Brad Brown

Level 3 Expert

13531 Answers

Are you a Creative Labs Computer Speaker Expert? Answer questions, earn points and help others

Answer questions

Manuals & User Guides

Loading...