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Ground hum loud - Creative Labs MegaWorks THX 650 Computer Speakers

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Groung hum is usually caused by another 60 cycle interfearance. The two case grounds are not sharing a common ground. Use a 2-prong adapter on the speaker power cord, thus isolating the ground to the speaker.

Sometimes you can take an extra audio cord and connect (a not used connector) from the bass speaker to the computer, just so it will have an additional ground.

Posted on Oct 06, 2010

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Apart from the suggested solutions shown below, you might also want to consider the turntables power supply as the cause of the hum. Perhaps a faulty mains smoothing capacitor?

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1 Answer

I have Insignia ns-p42q-10a tv, there is a loud hum when the volume is on when you mute the volume it goes away? Any suggestions?


check other inputs AVI, HDMI,,

do you here the hum on all inputs?

The hum maybe from a bad ground loop,, unplug all pluged in inputs, [dvd,games,radio,ect] <--check for hum.

If the hum is gone, plug inputs back in one at a time and test,,

When you find the source of the hum, go get a ground loop isolator to fix.

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Turn on your bose so you can hear it hum. Go to the back of your cable box and remove the co ax cable connected to "cable in". If the humming stops, the sheilding on your cable is no longer grounded. Purchase MPAV800 or similar surge protector to run cable line through it and get it grounded.

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