Quote:
Originally Posted by Username1
Since its am/fm, put the switch between bands to where you get nothing, like a tv tuner between 2 & 3, between the detents. Turn the volume through its range, if the hum is constant its a filter cap. If it changes look at the tubes.
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I couldn't get the switch to stay between bands. So I left it on AM between stations (This model radio is quiet between radio stations...no noise). I was able to increase the volume of the hum by turning up the volume knob. Is this a tube issue?