Sears/Chamberlain 139.53671SR7 Garage Door Opener

backyarddurangoSeptember 8, 2012

Door does not want to stop downward motion until the T bar flexes and the motor stops. Seems as though this action occurs as a result of normal sensing not working. Down sensor contact is already at the stop position when the unit is started and door will not reverse or go up. When it first hung up the door tried to reverse and stopped in a few inches. The door will travel easily up or down when not engaged to the drive and the safety sensors are both staying green with no flashes from the led. I presume that the problem is circuit related as the gears are still ok and trying to move the door downward until it cuts out. Up and down pressures are at one and increasing the up pressure doesn't help. Unplugging and retrying doesn't change anything.

Thank you for reporting this comment. Undo
sdello

It appears that the opener does not know the position of the door.

Take the cover off and confirm that the end stops are functional and in the correct locations.
There is an RPM sensor that spins and has three "blades" that pass in front of a sensor on the logic board. Make sure it is on securely and not broken.

If everything else looks good it's likely a logic board issue.

Hope that helps.

    Bookmark   October 8, 2012 at 8:51AM
Sign Up to comment
More Discussions
Help - how do I fix this tippy fence - did a dumb thing
Am building a 6 foot wood privacy fence (L shape) from...
kashka_kat
Door knob
My front door knob screws won't stay tight so if I...
padfoot4768
Sidewalk crack
Any way to fill/hide this crack? I could cut slot wider....
stoveguyy
what type of contractor needed for this?
What type of contractor is needed to replace a rotting...
pdg777
Moss removal help!
Can anyone tell me how to effectively remove what looks...
nycbride07
People viewed this after searching for:
© 2015 Houzz Inc. Houzz® The new way to design your home™