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Help!! Logitech speakers problem

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Name: Amit
Date: September 2, 2003 at 22:45:10 Pacific
OS: Win 2K
CPU/Ram: PIII 733
Comment:

I discovered the problem I was having with my Logitech 2.1 ch speakers system, but the thing is I don't have a solution. The speakers give off a loud humming noise (regardless of whether I connect it to the computer or not), and the noise goes away when I pull the power plug of my computer (not just switch if off). Can someone please tell me what's going on and how to rectify it. I think there's nothing wrong with the speakers, as they work fine on my other computer. Also, I think my computer's emmitting some kind of frequency that's causing disturbance with the speakers.



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Response Number 1
Name: SkipCox
Date: September 2, 2003 at 23:10:12 Pacific
Reply:

Try moving your speakers away from the machine. Try different positions.


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Response Number 2
Name: Amit
Date: September 2, 2003 at 23:15:04 Pacific
Reply:

When I moved the speakers away from the PC, the humming grew softer... so that was good. BUT, when I bring the audio cable close to the PC (to plug it into the soundcard socket) the humming grows louder the closer I bring the cable to the PC. When i do plug it in, then the noise is overwhelming.


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Response Number 3
Name: Adam
Date: September 2, 2003 at 23:30:26 Pacific
Reply:

Had the same problem with my brothers computer when I first built it, replaced the power supply, problem disapeared.


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Response Number 4
Name: SkipCox
Date: September 2, 2003 at 23:32:22 Pacific
Reply:

Wonder where all this noise is coming from? Do you have a microphone plugged into the card?

I can't tell if its noise or feedback.

If it's just noise then you should be able to find a shielded extension cable at RadioShack or an electronics store that may help.

Kinda odd problem


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Response Number 5
Name: SkipCox
Date: September 2, 2003 at 23:34:41 Pacific
Reply:

Since I don't know what the hell I'm talking about here, I like Adam' answer. Makes perfect sense.

I need a beer.


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Response Number 6
Name: Amit
Date: September 2, 2003 at 23:50:47 Pacific
Reply:

Thanks alot for the feedback guys...
I'll try chanding the power source.... hopefully it works. Geeeez, the power source must be really dodgy :(
Can I simply take the power source of my old computer (PI 133MHz) and chuck it in the new one (PIII 733MHz)?? or will this be a problem.
Additionally, I don't have a microphone plugged in... and it's on mute anyway.
Hey SkipCox, u had ur beer yet??? heheh


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Response Number 7
Name: SkipCox
Date: September 3, 2003 at 00:29:38 Pacific
Reply:

Yes I have. Your old p/s is likely an AT and your new one an ATX. A quick look at the connectors on the motherboards will let you know if they are different.

Good luck

Skip


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Response Number 8
Name: d85kennedy
Date: September 3, 2003 at 05:39:37 Pacific
Reply:

guys guys guys i am dissapointed.

this is a simple electrical problem
the loud humming is cause by an earth loop in the extension cable. this can happen.
to stop the humming open the plug of the speakers and disconnect the earth wire. (dont touch the other 2!)
if its a pre-moulded plug and you cant open it, cut the plug off and fit a new one without the earth wire.
this should solve the problem.
if you do not want to do this, buy another extension cable that is more sturdy.
why do some people look for the really complicated solution.....
hope this helps.
dave


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Response Number 9
Name: gary
Date: September 3, 2003 at 09:03:09 Pacific
Reply:

I doubt if it's a ground loop if the hum decreases when the speakers are moved away from the PC.
It's not a good idea to disconnect the ground wire. It's there for safety reasons.
If you have another power supply you can try, that's a good idea.


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Response Number 10
Name: Amit
Date: September 4, 2003 at 19:25:41 Pacific
Reply:

Thanks people, much appreciated.
The power cable doesn't have an earth pin anyway... so i don't think that's an issue.
And yess.. u were right, my old psu is AT and not ATX (Damn!), i've gotta get a 2nd hand one :(


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