1680 receiver hum

[Mark S Graalman]

 Remove the wire off the center lug of the volume
control and add in a 10K ohm resistor in series with
the wire and hook it back up, your low volume hum
level will not be completely gone, but MUCH better.

Mark  WB8JKR


On Fri, 8 Sep 2000 13:22:55 EDT "John Q. Doe" <BIGWATER1 at AOL.COM> writes:
> I recently acquired a HR-1680 receiver which appears to work with the
> following exception.   If the AF gain is turned up all the way it is
> OK.
> However, a hum appears when the gain is not all the way open.   I
> have no
> schematic or manual, but suspect a capacitor problem.   Can anyone
> help with
> a suggestion on how to fix this?
>
> Bruce
> Ocala, FL
>
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