These may be metal plates screwed on to the chain plastic snap ons dojiggies with flexible metal arms attached etc.
Sears garage door opener closes then opens again.
If this is a sears srt without external travel limit switches the internal travel limit is out of adjustment telling the opener to continue after the bottom of the door makes contact with the garage floor basically driving it into the ground until the force required exceeds what the safety system force is set at.
When the logic board wears out it can cause your garage door to close then open and vice versa without explanation.
Look for trip arms or clips attached to the opener chain.
In order to fix this you ll want to make small changes to the close limit setting until the door opener knows to stop once the door has reached the floor.
If the garage door fully opens or closes you are done.
The symptom of this is a garage door that is in constant motion opening fully then immediately descending only to start the same cycle again.
Then during some cold winter day.
If that doesn t fix the problem check the wiring between the motor unit and the wall control.
You have to keep adjusting till the garage door opens or closes fully without reversing.
Until a year or so ago we never had a problem with it.
Get logic board replacement.
When your garage door opens or closes when you haven t triggered the remote one possible cause is that a neighbor s remote was programmed at the same time as yours.
If the garage door does not close completely or begins to close and then opens back up again the down limit switch needs.
Your garage door s logic board is the brain of your garage door opener.
If your garage door is closing fully and then reversing to open again then it may be due to a problem with the close limit switch.
Erase all codes in your remote and then reprogram it.
This brain can wear out in time so you could need a replacement.
Else repeat the process once again.
It is important to perform the safety reversing test after adjusting the force settings.
As these wires short against the housing the electrical impulse causes the door opener to activate.
There may also be loose wire connections inside the button housing itself.
Hi in 2002 we purchased and had installed a craftsman 1 2 hp garage door opener model 139 53965srt.
