"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.