"Ross Herbert" wrote in message
...
On Fri, 22 Jun 2007 17:47:11 GMT, "James Sweet"
wrote:


wrote in message
roups.com...
On Jun 21, 2:53 pm, "David Farber"
wrote:

Sorry about this incomplete message. It was erroneously sent. I
think the
solution will be to replace the noisy relays with new ones.

That, it would. Stanley makes (made) good stuff, and 28 years ain't
nohow half-bad. If all it is is relays, count yourself lucky.

Peter Wieck
Wyncote, PA


Might be worth checking to see if there's a diode or rectifier bridge
in
there. A shorted diode could cause AC to be fed to relay coils
expecting DC
which will make them chatter or buzz.


It could also be due to, or exacerbated by, a dried out electrolytic
filter capacitor in the DC supply circuitry.

It occurred to me that if I posted the pictures of these relays, that it
would be easy for somebody that is more familiar with this type of equipment
would be able to tell me if these relays have AC or DC type coils:

http://www.pbase.com/mrfixit/image/81163240

http://www.pbase.com/mrfixit/image/81163242

http://www.pbase.com/mrfixit/image/81163244


Thanks for your reply.

--
David Farber
David Farber's Service Center
L.A., CA