"mc" wrote in message
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FM stereo receiver, vintage 1973, has a noticeable background hoise
(hiss/white noise) on FM stereo regardless of the incoming signal level.
It disappears completely upon switching to mono.

Is this normal in a receiver of that age? If not, what components are
likely to be deteriorating?


How good is your antenna for the station that you are trying to receive?
Do you have an outside antenna?

These symptoms are common for fringe reception (stereo not full quieting -
but mono is better).

If you are trying to receive the signal with a small dipole in a tall steel
and concrete high rise - then you are not getting sufficient signal strength
to the receiver.

gb