Question about Philips HTS3400/37B System
Check to see if reversing the plug takes away the buzz. Some times turning the plug over in the wall socket i.e. reversing polarity, will remove the buzz.
Posted on Jan 17, 2009
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Posted on Jan 02, 2017
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Buzzing is usally AC line noise leaking into an un-shielded cable somewhere or a floating ground. If the AC plug is reversible, try that. Sometimes the buzz is from an attached device. Make sure all audio cables are plugged in tightly at each end and routed away from or at right angles to any power cords and away from other sources of strong magnetic fields like TV's. I've also seen variable track lights induce noise but it's usually minor.
Try rotating the power cord in the wall outlet.
If it still does it with no cables or anything external attached it
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