My garage door opener has developed a low frequency hum, not while
operating, but just standing by. I don't recall it making such sounds
during warmer weather. But, now that it is quite cold I can hear it while
in the garage. What could be making the sound and is it a sign of a
problem? It sounds a bit like the hum of a battery charger. Any thoughts?
If you have an older operator that has a transformer that is separate
from the logic board, it is most likely the transfomer that is
humming. A transformer is made up of metal plates that are glued
together and as the glue breaks down the plates will vibrate which
causes the hum. If this is the cause, it will have no effect on the
operation of the opener and the part does not need to be replaced.
Most likely the transformer, but could be a loosened fastener which is allowing
some other part to "sing" when exited by the vibration of the transformer.
If it bothers you enough and is nice enough to keep humming when you take off
the access cover, you can poke gently around with a wooden chopstick and see if
there's something you can push against which makes the sound go away. (Keep
your other hand in your pocket while you do that, I wouldn't want to find out
you slipped and took 120 volts through your chest.) <G>
If you can locate the "sore tooth", try swabbing some 5 minute epoxy in an
appropriate place to freeze up whatever's loose.
Jeff Wisnia (W1BSV + Brass Rat '57 EE)
"If you can keep smiling when things go wrong, you've thought of someone to
place the blame on."
HomeOwnersHub.com is a website for homeowners and building and maintenance pros. It is not affiliated with any of the manufacturers or service providers discussed here.
All logos and trade names are the property of their respective owners.