What are the specs on the labtec mcs-150 pc speakers? how many watts?

SOURCE: speakers

1. first findout the problem is due to speaker or from your computer soun driver or hardware.
2. for checking speaker, connect to an ipod or walkman to the speaker input if it works the speaker is okay
3. check the computer sound driver software may installed properly
4. for these type dxdiag on run in the start menu
5. check the sound driver problem, if it re install the sound driver by using its cd

SOURCE: labtec speakers want play

check whether the output plug is connected properly or not.... if it is then check out whether the adapter is giving the power output.... if it is then the speakers are spoilt otherwise u can just replace the adapter...

SOURCE: installing Labtec LCS 800 speakers

1 wire goes between the 2 speakers
1 wire goes from the speaker with 2 jacks in it to the computer, the back of the computer should have a green port to plug in the cable to
1 wire is the power

this is a guess without seeing your setup

SOURCE: wiring internal board of labtec computer speakers

The shielded wires are for ground, so they get connected together. Plug the wire into the PC and run some music. Then touch each wire to the others. You only have a couple of combinations to try...red-to-green and white-to-yellow, or red-to-yellow and white-to-green, . You can do this while the PC is one and music playing until you get sound thru the speakers. There virtually no current running thru the wires and you can't hurt the PC by doing this.
If the speakers use an external power supply, have it plugged in and working when trying these connection options.

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SOURCE: Labtec LCS-2424 speakers: left speaker stopped working

I have the same problem sir, only the speaker with volume
control works. Earlier I used to twist the volume control this
way and that way to get the sound from the other speaker also.
Now the same technique doesn't work anymore.