If the circuit breaker or gfci is tripping repeatedly it s a sign that there is a short circuit somewhere in the system possibly even the garage door opener itself.
Garage door opener cord too short.
This is a problem that will require you or a service person to replace it.
Best option is to remove the cable and wire the unit with a longer cable just long enough so it can be fixed out of the way and reach the outlet.
Garage door openers manufactured after 1993 include sensors to prevent a door from closing on a child or pet.
Not using an extension cord is more of a strong recommendation.
The manufacturer s power cord is too short.
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Finally it s possible the garage door opener s motor has burned out and isn t operating at all.
Pull the end through until the handle is six feet above the floor.
Sometimes it will go along the ceiling and wall to a wall receptacle.
Several safe options just don t splice.
Feed the other end of the cord through the emergency release lever on the door opener.
Tie an overhand knot to secure it.
Be sure to secure the connection between the opener s own cord and the short extension by holding both cables together not too tight and placing a plastic tie wrap around both so they cannot disconnect.
As a home inspector we frequently see extension cords between the garage door opener and the ceiling receptacle.
Mc cable installed to fix garage door power plug so extension cord is not used.