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Posted by Rich on June 24, 2007, 8:57 am
Disconnect the power cord, take the cover off and look at your limit switch
assembly, http://garagedoorsupply.com/limitswitch.jpg. You will probably
find a plastic clip with a wire attached, contact, has come off the limit
adjustment screw. Close your door and reposition the clip so that the
metal contact touches the cemter limit contact. Reconnect the power and run
the unit and make gradual adjustments until it stops where it is supposed
to. Do the same for the up limit.
Rich
http://www.garagedoorsupply.com
>I have a Sears screw drive opener, model #953992, 1/2 hp. I had this
> opener running for quite a while, and then had a bad water leak
> upstairs...water leaked into the garage ceiling and damaged the
> opener. I fixed all the water damage and went down and bought the
> exact same opener, thinking all I had to do was change the motor, and
> I wouldn't have to deal with assembling a new rail, door sensors etc.
>
> I put the new motor on as planned and fired it up. All it did was hum
> briefly and stop, and then gave me 5 blinking lights in the back. I
> didn't pay any attention to where the trolley was on the rail when I
> installed it, but (after reading the directions) I learned that it was
> supposed to be positioned about 9" from the end of the rail, nearest
> the door. So I moved the trolley, but in the meantime, I turned the
> heck out of the adjustment screws trying to figure out what was wrong.
>
> So now, the door runs okay, but runs the door all the way down, and
> right back up til the trolley hits the limit pin near the motor and
> stops. I try adjusting the limit screws, but it doesn't seem like
> it's doing anything. My fear is that I messed with them so much that
> they backed all the way out, or no longer work for some reason.
>
> I'm thinking of calling a pro at this point, but if I could get it
> back to some kind of reference point to start out, I think I could get
> it adjusted...right now I have no idea where I'm at.
>
> Any suggestions or should I call a pro?
>
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