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Humming on tone knob - power lead was the culprit. Why?


lownote
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Running a P bass clone with ToneRider pups on a KiOgon loom through a LM3 into a BF 210.  Started getting bad hum and bad crackle but only when the tone knob is turned up. Turn it down (off) no issue.  No obvious earthing issues. Tech couldn't find anything.  Eventually replaced everything, including kettle lead which turned out to be problem. Can anyone explain why that might be? 

Edited by lownote
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9 hours ago, Stub Mandrel said:

Was the kettle lead earthed. May have been an earth loop broken by using a kettle lead with no earth, or vice versa providing a missing earth.

Apparently not.  Good wall socket, good amp socket.  Somehwere betweenthe otherwise new Amazon kettle lead failed, I guess

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