It could be a bad connection in the power outlet opener cord or internal wiring or components of the opener.
Garage door opener shuts off after opening.
However if it is staying on longer than that there is a problem you need to address.
The team here at sevan locks and doors has a few tips for you to troubleshoot the fact that your garage door opener light won t shut off.
If the door starts to open but won t move more than a few inches the torsion spring may be broken.
This brain can wear out in time so you could need a replacement.
What controls the lights.
If this isn t lit check for a tripped breaker in the main panel or a tripped gfci outlet.
Try moving the cord around and see if the light on the opener flickers or goes off.
When the logic board wears out it can cause your garage door to close then open and vice versa without explanation.
Your garage door s logic board is the brain of your garage door opener.
It s usual for it to be on for about 4 minutes after you open your door.
Get logic board replacement.
You can also try an extension to another outlet to test if works better there.
The keypad doesn t work firstly check that you re using it within the range required for your opener.
Your logic board needs replaced.
You may also need to reprogram your keypad or replace the batteries in it.