041225 2023 - toller posted:

My 6 year old LiftMaster/Chamberlain 1265 has stopped working. When I push
the button it hums for a few seconds twice, and then nothing. I disengaged
the door, but it doesn't help.
Any ideas what to do? I sent them an email, but with the holidays I am
sure it will be a week or two until they reply. Funny thing is that you
have a choice of complaint, and one is "hums without working"; but their FAQ
does not mention the solution.
Thanks.



Any motor that just hums and doesn't turn over indicates, usually, that the
centrifugal switch has failed and needs the contacts cleaned. The motor
will have to be removed and the ends taken off. The contacts could just be
dirty, or maybe burned a little. Some emory paper should polish them up and
then put the whole thing back together and connect to the line voltage and
see if that will solve your problem.