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Posted by on May 22, 2009, 7:16 am
> James wrote:
> > This is a Craftsman unit, about 12 years old. =A0It uses the chain, but
> > has worked fine.
> > Today, the door would not go up and down. =A0The unit buzzes (loud)
> > like the motor is trying to run, but the chain does not move. =A0 =A0Ca=
n
> > unhook the door from the chain, and run it up and down manually, but
> > the drive motor seems to be buzzing and not functioning properly.
> > Is the a home repair, or more likely a worn out unit needing
> > replacing ?
> > Thanks
> > James
> This model may have nylon gears - and they often get stripped. A new set =
of
> gears is cheap and easy for the homeowner to replace.
Heybub is the winner...to the point and nearly precise! I am a
mechanic (almost) and this is NOT the easiest job.
I think the gear set was 20 or $25.
And Sears' openers are Chamberlain...and NOT a crappy opener!
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>working and didn't respond to the remotes or hardwired pushbutton. This one is
>similar to the Craftsman but sold under a different name.
>I pulled the electronics out and on the PCB found FOUR cold solder joints (and a
>couple more that i didn't quite like the looks of.) Resoldered all the joints
>and it works like a charm.