garage door won't stay close
My double garage door can open and close normally.
Suddenly yesterday the garage door can open normally as usual but won't stay close.
It will touch the bottom of the floor and then immediately open again.
A workaround is that when it touch the bottom of the floor, if I pull the red emergency release string at the right time then it will stay close.
Please help to solve the problem.
Last edited by albertkao; 12-29-2010 at 01:40 PM.