DIYbanter - View Single Post - Receiver has a hum

T

In article ,
says...
One point hasn't been brought up.

If one or more of the caps are bad, then it's likely you'll hear hum even
with the volume control all the way down. If there is no hum with the
control the way down, the problem is probably elsewhere.

Regardless, it wouldn't be a bad idea to simply replace all the PS
electrolytics in a 35-year old receiver.

Reading all this I'd say a basic overhaul is in order. Replace the
electrolytic caps, the voltage regulator and the volume control pot and
it'll probably last another 35 years. Of course by then some vulture
will snap up the FM bands.