"CJT" wrote in message
...
Arfa Daily wrote:

"William Sommerwerck" wrote in message
...

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.




I'm not a great advocate of the 'shotgun' approach with this type of
equipment. A lot of times, a person who has little electronics skill, as
this poster told us he didn't, can cause himself more trouble by just
replacing items 'willy-nilly'. It's very easy to make a wiring or
polarity mistake. And once he has, he will be in even worse trouble than
before, as he now has both the original problem, and the one he's caused
himself ...

I did actually say in my first post in this thread, that hum as a result
of a power supply problem - for example a bad cap - will not usually be
affected by the volume control, so by implication, will still be there
with the volume at minimum.

Arfa



AFAICT, he never said there was no hum with the volume down -- just that
it varied with the volume control.

Ah ! Quite right, he did. Very likely the hum does go away completely with
the vol turned right down, but having read it again with the possibility
that it doesn't in mind, that makes a difference to my thinking, and makes
what William said more of a possibility. Regardless, either way, this should
not be a difficult problem to locate, but might be a shade too 'electronic'
for the OP to diagnose on his own, with the limited skills that he tells us
that he has in the field.

Arfa

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