Tried adjusting the force adjustment but no luck.
SOURCE: craftsman 3/4 hp garage door opener
not sure, but see the users manual here:
http://www.manualslib.com/manual/32293/Craftsman-139-5399.html
SOUNDS LIKE SOMEONE MAY HAVE PRESSED THE LOCK / VACATIONS SWITCH ON YOUR WALL CONTROL. IF STILL NOT WORKING AND THE LED IN THE WALL SWITCH IS NOT FLASHING TRY AGAIN TO PROGRAM YOUR REMOTES.
GOOD LUCK
STEVE
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