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.
Garage door opens intermittently loss of power.
Locate and eliminate the source of the rf interference.
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.
Led lightbulbs are great but they may cause your garage door openers to stop working.
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3 the circuit board itself is faulty.
The solution is either to adjust the tracks on either side of the door grease the rollers adjust the spring or fix the track that the opener caddy runs along.
4 a wire or wire harness is loose or burnt.
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.
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.
1 the transformer has failed due to a power surge.
If the remote works only when held within a few feet of the motor unit rf interference is probably the problem.
Here is what may cause your garage door opener to not power on.
2 the glass fuse on the circuit board has blown or popped.