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Audio and Video Talk
General Discussion
Humming sound
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<blockquote data-quote="chrisc" data-source="post: 798467" data-attributes="member: 746"><p>Undo the mains plug and disconnect the green wire</p><p>Ascertain which of the other components in the system are earthed via the mains plug</p><p>Take a short piece of wire, touch it to the chassis of the power amp and touch it in the chassis or frame of another earthed component, listening to the speakers at moderate volume (say 1/4)</p><p></p><p>If the hum disappears when you first disconnect the earth wire, then you had an earth loop</p></blockquote><p></p>
[QUOTE="chrisc, post: 798467, member: 746"] Undo the mains plug and disconnect the green wire Ascertain which of the other components in the system are earthed via the mains plug Take a short piece of wire, touch it to the chassis of the power amp and touch it in the chassis or frame of another earthed component, listening to the speakers at moderate volume (say 1/4) If the hum disappears when you first disconnect the earth wire, then you had an earth loop [/QUOTE]
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Audio and Video Talk
General Discussion
Humming sound
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