[HAM] M3 Hums on Start Up

[Linxj6 at aol.com]

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   My c-3 was doing that and it progressed after a few months to a hum
whenever it felt like humming. Tapping the capacitor in the preamp of the organ
would temporarily take the hum away. It was the biggest capacitor in there causing
the trouble. I soldered in a new one and-no hum-no more. Lin in Pa.