Might also be lubrication problems. Read the owners manual, or do some
netsearch. Many times when motors don't turn, they need lubrication. I have
disassembled a lot of electric motors, cleaned them out with solvent, and
relubricated them.

Might also be that something in the gears or chain needs lubrication.

--

Christopher A. Young
Learn more about Jesus
www.lds.org
www.mormons.com


wrote in message
oups.com...
Motor hums, chain does not move.

It all started after trying to open it and it moved a little bit and
made the awfulest racket.