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Garage door opens intermittently loss of power.
2 the glass fuse on the circuit board has blown or popped.
Lights on safety sensors do not always cause unit to work properly turn on unit light or stop unit when something is blocking crosses them even though lights on safety sensors remain on.
See all the details in this video.
Led lightbulbs are great but they may cause your garage door openers to stop working.
4 a wire or wire harness is loose or burnt.
When the garage door opener works intermittently the logic board may be experiencing radio frequency rf interference from nearby sources such as security lights ham radios and some electronics.
If the remote works only when held within a few feet of the motor unit rf interference is probably the problem.
3 the circuit board itself is faulty.
A power surge from a lightning strike or other electrical problem can cause the board to go bad as well as the transformer.
If there is too much resistance the garage door opener stops and usually blinks it s light once or twice as a warning.
Locate and eliminate the source of the rf interference.
How can i fix a garage door opener that loses power on the motor unit led is not my on door control when this occurs when motor unit loses power it will come back on when tapped sometime lights on safety sensors stay on.
If the safety sensors and operator button are working correctly and no bad wiring or connections are found your issue may be with the control board in the garage door opener itself.