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Posted by HeyBub on May 19, 2009, 10:22 pm
James wrote:
> This is a Craftsman unit, about 12 years old. It uses the chain, but
> has worked fine.
> Today, the door would not go up and down. The unit buzzes (loud)
> like the motor is trying to run, but the chain does not move. Can
> 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.
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Posted by on May 20, 2009, 9:28 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.
This is very likely to be the correct answer. Many of these have a
nylon gear set that slowly wears away. Looks like this;
http://cgi.ebay.com/ws/eBayISAPI.dll?ViewItem&item=3D120411645744
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Posted by Hipupchuck on May 20, 2009, 9:58 am
jamesgangnc@gmail.com wrote:
>> James wrote:
>>> This is a Craftsman unit, about 12 years old. It uses the chain, but
>>> has worked fine.
>>> Today, the door would not go up and down. The unit buzzes (loud)
>>> like the motor is trying to run, but the chain does not move. Can
>>> 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.
>
> This is very likely to be the correct answer. Many of these have a
> nylon gear set that slowly wears away. Looks like this;
>
> http://cgi.ebay.com/ws/eBayISAPI.dll?ViewItem&item=120411645744
Made by Mattel, they are swell.
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Posted by Sooperdave on May 20, 2009, 10:35 am
Totally off the mechanical subject, but wanted to add that my unit stopped
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.
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Posted by The Daring Dufas on May 20, 2009, 11:38 am
Sooperdave wrote:
> Totally off the mechanical subject, but wanted to add that my unit stopped
> 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.
Most of the problems I come across when repairing
electronic equipment has to do with cold solder
joints. It's amazing how much good stuff people
discard in the trash that has little or nothing
wrong with it. I've see many expensive control
circuit boards thrown away that had a simple to
repair bad connection.
TDD
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> has worked fine.
> Today, the door would not go up and down. The unit buzzes (loud)
> like the motor is trying to run, but the chain does not move. Can
> 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