Question about Labtec Pulse 424 Computer Speakers

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I have the Pulse 424 speakers and they are like 8 years old. The speaker with the power and volume knob is out. It works to turn on speakers and control volume but no sound. The woofer and the other speaker sound great but would love to have all 3 speakers working. My control panel/device manager states everything is fine and updated. Do I have to buy another system???

Posted by Anonymous on

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  • Labtec Master
  • 27,725 Answers

If you are having problems with your sound
if your computer came with a motherboard disc the sound drivers could be on it
click start control panel administrive tools computer management device manager scroll to sound,video and game controllers you might see a yellow question mark? Right click to reinstall drivers
click start control panel sounds and audio,volume,advanced,speakers make sure you have selected the
(((appropriate speakers))) also audio you will find 3 drop down lists make sure you have the correct settings there
also
click start control panel sounds and audio devices you can adjust the volume there also select speaker volume you can change your settings there you can also tick in the box place icon in taskbar
if his does not fix the problem

have you tried this control panel sounds and audio,volume,advanced,speakers select the appropriate speakers from the drop down list or navigate to the device manager scroll to system devices + to expand,system speaker right click properties then select use this device (enable) also you might check
the speakers plug/outlet is usually at the back of the computer you will have to open up the computer to check the lead attached to the rear of the input plug make sure the connection is good
try cleaning your computer of dust using a fine air blower from a compressor making VERY sure that there is no MOISTURE in the air line specifically around the sound card and the CPU central processing unit dust causes static to build up in a computer
hope this helps

Posted on Mar 31, 2011

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Posted on Jan 02, 2017

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2 Answers

`Have trouble adjusting volume.When i try to adjust the volume tone is very scatchy and breaking up..something seems to be wrong with volume control knob.


1) Turn your speakers off.
2) While blowing a can of compressed air into the switch, twist the knob up and down a bunch of times.
3) Repeat step 2 for roughly 10 minutes, blowing the dust out of the volume controller.

Try it again..

Good luck!!

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Please check the below mentioned things :
Verify the AC power cord is plugged into the wall outlet. Turn the VOLUME knob on the right speaker until you hear a click sound. An LED will light next to the knob when the power is ON. Turn the VOLUME knob clockwise to raise the volume. Check volume level on the computer sound card or alternate audio source device, and set at mid-level. Check plug connections on the audio source. Make sure the signal cables are inserted firmly into the correct jacks. Make sure the 3.5mm stereo cable is connected and fully inserted into the "line-out," "audio-out," or the headphone jack of the audio source. Test the speakers on another audio device. Remove the 3.5mm stereo cable from the audio source device and connect it to "line-out," "audio-out," or the headphone jack of another audio source.
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Hmmm I just got the same problem. They worked fine on my old Dell desktop but when I plugged them in to my son's old Dell PC (maybe 1 year newer than my old one) they all hum like crazy - as you say even if it's just the power plugged in and nothing else. Yes it does have the original power supply. I get no music (but still it hums) from digital out/in but when I switch to analog out/in I hear the music and it still hums, plus the sound is distorted. Wierd.

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Most probably there is a problem in the cable or plug.

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The simplest thing to try is some compressed air directed to the knob. This would clear out any dust or dirt that may be obstructing the knob. I am not sure what you mean by power cut so I am shooting in the dark here. If you mean a power surge that caused the volume to quit working then I would suggest an external volume control such as http://www.amazon.com/Koss-155954-VC20-Volume-Control/dp/B00001P4XH/ref=pd_bbs_2/002-2257004-6895258?ie=UTF8&s=electronics&qid=1194009359&sr=8-2

Or

http://www.radioshack.com/product/index.jsp?productId=2102975&cp=&sr=1&origkw=volume+control&kw=volume+control&parentPage=search


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I got on the internet the today to see if I could figure out why it did this. One person suggested cutting my speaker wires and resplicing it making sure no hanging wires where there.
I had been using the same speaker wire since I puchased it (10 yrs ago). I feel pretty stupid, cause I just did the wires to my front 2 Infinite speakers and WaLa...It works flawlessly. I can now turn up my receiver...after 10 years of dealing with no 'full' volume.
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  • i think the problem is due to dust
  • using a vaccum cleaner or use a painting brush for clean the IC legs and ciruit
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wish you all the best

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