Dimitrios Paskoudniakis wrote:
"Tony Hwang" wrote in message
news:HTFMh.52376$DN.271@pd7urf2no...

Dimitrios Paskoudniakis wrote:

A contractor just installed a new Sears opener yesterday, and I just
noticed a persistent low volume buzzing sound coming from the unit. This
is one of three I have. The other two and the old one have never done
this. Any ideas?

Hi,
When motor is in motion or?


All the time. When the door is fully closed, fully opened, or in motion.



Probably coming from the power transformer which may have not been
varnish impregnated or otherwise treated to prevent its parts from
"rattling" slightly under the influence of the ac magnetic fields within it.

If you know what a transformer looks like, remove the opener's cover and
with the power connected use an insulated rod, like maybe a popsicle
stick, to gently press against different locations on and near the power
transformer and see if you can make the buzzing cease.

If you can make it stop, then disconnect power from the unit and try
smearing some 5 minute epoxy on the parts which you found "rattling" and
could silence by pressing on them. That will probably do the trick.

You may also find when prodding around with the insulated stick that
it's just a loose fastener near the transformer allowing something to
vibrate against someting else.

Good luck,

Jeff

--
Jeffry Wisnia
(W1BSV + Brass Rat '57 EE)
The speed of light is 1.98*10^14 fathoms per fortnight.