Question about Gateway GMAX 5100 Computer Speakers

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GMAC 5100 Speakers

I woke up one morning to a loud humming sound coming from my subwoofer speaker. Now, when ever I turn the subwoofer on, it continues to hum loudly. Is this repairable? If so, can I repair it myself, or do I need to send it to the manufacturer?

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I think that the internal power supply is at fault the rrpair would be to repair it

Posted on Aug 20, 2007


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My 5.1home theater subwoofer giving more humming sound continues

Loud humming noise usually comes from a bad or missing ground connection, or a failed rectifier or filter capacitor in the power supply.

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Klh powered subwoofer model ASW10-120B... when you plug in to power... it makes a loud buzzing/humming noise

I would check the caps on the power supply. They are rather large electrolytic capacitors that will look like they burst and/or leaking. When these die, the caps ground and the sub will make a loud buzzing sound. If you are handy with a soldering iron you can replace them yourself. Replace them with the same voltage or a little bigger and same with the size.

If the cap. says 16v 4700pF on it, for example, a 20v 5300pF or a 16v 6200mF cap. will work for this application.




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Older Harman Kardon computer speakers have loud hum

The hum (50 or 60 Hz) is caused by the AC power getting into the entry point of the amplifier. Either the filtering capacitors from the powersource of the speakers have dried up - replace them - or there is a short in the cables.
There is another possibility: if you have kicked the subwoofer  box its transformer might have slipped from its fixings and now is touching the subwoofer speaker frame.
The only way to find which is to open the cases.

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Humming sound when on/off

humming sound when on is usual if the volume is turned up.
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I had the same problem for many months. I asked a sound & video professional and he suggested I move the subwoofer away from any power source. I had the subwoofer next to my UPS. Once separated and moved all wiring away from the power supply (about 12") the low bass hum was practically gone.

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make sure you have the speaker connection right if you do then it is a ground problem try plugging it in a different outlet

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just try leaving it unplugged for a while thats what i did and it fixed it

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try another speaker on that channel if you get no sound or it hums then it is time to take your set to a tech your audio out put on that side is damage along with some caps.good luck.

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