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Old 22nd Jan 2020, 4:07 pm   #6
JimMac53
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Join Date: Apr 2009
Location: Naples, Florida, USA
Posts: 255
Default Re: Potentiometer in Andante 1462. Original?!?

So R19, 1.3Mohm, is the volume control and R20, 500kohm, is the tone control. Replacing R19 with a 1Mohm pot is fine - you may lose a little volume, but good enough. Your dual pot should be fine.

Touching point "A" or "B" will induce a 50Hz hum into the audio. It's actually one of the ways people test the audio section of these radios when there is no sound at all. Touching A or B will give a hum and then you know the audio section is working. So what I hope you are getting is this 50Hz hum (which in english is different from static - static is a high frequency noise or more like white noise - the noise you hear on fm between stations) So confirm the noise you are hearing is hum. Touching the metal parts of the pot when it is not installed in the radio (and hence electrically connected to the chassis) can induce this same hum.
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