Question about Creative Labs MegaWorks THX 250D Computer Speakers

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Left speaker not working, sub and right speaker work fine

I have Creative Megaworks THX 2.1 250D speakers for my computer.

Plugs plugged into the back of my subwoofer, when my speakers are powered up are as follows:
I have a green audio input cable plugged in, a volume control plug plugged in and left and right speaker plugs plugged in.

While all those settings are present, I only have my right speaker and my subwoofer producing sound. My left speaker does not produce any sound.

Was hoping someone might know why my left speaker isn't producing any sound.

Have I wired up my equipment incorrectly or has the left speaker simply stopped working?

Many thanks in advance for any queries anyone may have. They will be much appreciated. Cheers

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Open SKy
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SOURCE: 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

Posted on Feb 08, 2008

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SOURCE: The speakers don't work, and even though the whole

could be the volume controller . or bad power supply

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SOURCE: No sound from creative t3030 2.1 speakers

you checked adapter light the green light is show

Posted on Jul 23, 2009

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SOURCE: I lost the original speaker

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

Posted on Sep 05, 2009

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SOURCE: No Sound from External Speakers....only from Headset plug.

Hi, had same problem.... unscrew the remote and carefully remove the back end part of the stereo-connector (very careful !) it consists of a very small switch which moves sideways..... this switch is stuck into headphone-modus. Reassemble and it will work again
Note that speakers will work if you remove the switch

Posted on Apr 26, 2010

Testimonial: "Super info you've given...Thanks. Was going to replace it, but your suggestion is even better. Do you have to remove the switch to remove the casing?"

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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

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.
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@bronk50 He said "No power up"... Useless reply !
I too have a Megaworks system and sometime after it has lost current for an extended period, it won't power up... but it does magically after some minutes. I don't remember exacty what I did last time it did start up, but it eventually got on !! My advice:
Let the sub plugged to the wall. Put the rear switch to OFF then wait 30 minutes. If it does not start up after that, let the switch ON and cycle ON/OFF after another 30 minutes.
Hope this helps! This system is underestimated... The subwooofer is so musical. Great bass comes from this system. Another hint: Keep your bass volume at 2 bars, I found it to be the sweet spot before it goes boomy :-)

Apr 30, 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...

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Sub works, left speaker works nothing out of right speaker, switched speakers around then right plays but no left??? computer, I-pod- symptoms consistant???


I had a same problem.Left speaker with no voice.Fallowing solution worked for me.
Disconnect the sub's electric first.Loosen 4 screws ant pull out the control unit slowly.Be careful, it is tight.Then you will see the big aluminium cooler.Carefully squeeze the two parallel arms between a finger and thumb to bend and get closer them about half mm.Then connect the plugs and play an mp3 to control.If it is ok, replace the control unit and tighten the secrews.

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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

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...

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Creative cambridge sound work megaworks thx 5.1 550


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Jun 22, 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

Feb 08, 2008 | Creative Labs MegaWorks THX 250D Computer...

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